A Max and Jill are talking about solar paint. Complete their conversation with the correct forms of the words in brackets.
Max: Hi, Jill! I just read an interesting article about solar paint.
Jill: Solar paint? What's that?
Max: It's a kind of clean energy technology. You use it just like regular paint. But once it's on a surface, the paint collects solar energy, like solar panels do. Scientists in this field think solar paint $^{(1)}$
Jill: Like what?
Max: Well... it $^{(2)}$
Jill: Wow! That sounds amazing! $^{(5)}$
Max: Yes, it will! Cars, roads and even computers $^{(6)}$
Jill: So cool! Can we already buy solar paint?
Max: Not just yet. Scientists are still experimenting with it. But I think it $^{(8)}$
Jill: I can't wait!
Max: Hi, Jill! I just read an interesting article about solar paint.
Jill: Solar paint? What's that?
Max: It's a kind of clean energy technology. You use it just like regular paint. But once it's on a surface, the paint collects solar energy, like solar panels do. Scientists in this field think solar paint $^{(1)}$
will be used
(use) on all kinds of surfaces soon!Jill: Like what?
Max: Well... it $^{(2)}$
will be painted
(paint) onto buildings. Then, energy from the sun $^{(3)}$ will be collected
(collect) by solar paint. We'll use that energy to produce electricity in the buildings. Just imagine: all buildings $^{(4)}$ will be powered
(power) by solar paint!Jill: Wow! That sounds amazing! $^{(5)}$
Will
solar paint be put
(put) on other surfaces too?Max: Yes, it will! Cars, roads and even computers $^{(6)}$
will be covered
(cover) with solar paint one day. Phones too! With solar paint on our phones, chargers $^{(7)}$ won't be needed
(not need) anymore.Jill: So cool! Can we already buy solar paint?
Max: Not just yet. Scientists are still experimenting with it. But I think it $^{(8)}$
will be produced
(produce) for customers within the next few years.Jill: I can't wait!
答案：1. will be used；2. will be painted；3. will be collected；4. will be powered；5. Will; be put；6. will be covered；7. won't be needed；8. will be produced。
解析：
（1）根据时间状语“soon”可知，此处用一般将来时，且主语“solar paint”与“use”之间为被动关系，应使用一般将来时的被动语态，其结构为“will be +过去分词”。所以填will be used。
（2）根据语境，此处指油漆将被涂到建筑物上，“it”指代“solar paint”与“paint”之间为被动关系，且根据前文时态，此处用一般将来时的被动语态“will be +过去分词”。所以填will be painted。
（3）句子主语“energy”与“collect”之间为被动关系，且根据前文时态，此处用一般将来时的被动语态，所以填will be collected。
（4）根据前文，此处指所有建筑物将由太阳能油漆供电，“buildings”与“power”之间为被动关系，且用一般将来时的被动语态，所以填will be powered。
（5）根据语境，此处是一般疑问句，且为一般将来时的被动语态，其结构为“Will +主语+ be +过去分词?”。所以第一个空填Will，第二个空填be put。
（6）根据“one day”可知，此处用一般将来时，“Cars, roads and even computers”与“cover”之间为被动关系，应使用一般将来时的被动语态，所以填will be covered。
（7）根据语境，此处指充电器将不再被需要，“chargers”与“need”之间为被动关系，且用一般将来时的被动语态的否定形式，其结构为“won't be +过去分词”。所以填won't be needed。
（8）根据“within the next few years”可知，此处用一般将来时，“it”指代“solar paint”与“produce”之间为被动关系，应使用一般将来时的被动语态，所以填will be produced。
（2）根据语境，此处指油漆将被涂到建筑物上，“it”指代“solar paint”与“paint”之间为被动关系，且根据前文时态，此处用一般将来时的被动语态“will be +过去分词”。所以填will be painted。
（3）句子主语“energy”与“collect”之间为被动关系，且根据前文时态，此处用一般将来时的被动语态，所以填will be collected。
（4）根据前文，此处指所有建筑物将由太阳能油漆供电，“buildings”与“power”之间为被动关系，且用一般将来时的被动语态，所以填will be powered。
（5）根据语境，此处是一般疑问句，且为一般将来时的被动语态，其结构为“Will +主语+ be +过去分词?”。所以第一个空填Will，第二个空填be put。
（6）根据“one day”可知，此处用一般将来时，“Cars, roads and even computers”与“cover”之间为被动关系，应使用一般将来时的被动语态，所以填will be covered。
（7）根据语境，此处指充电器将不再被需要，“chargers”与“need”之间为被动关系，且用一般将来时的被动语态的否定形式，其结构为“won't be +过去分词”。所以填won't be needed。
（8）根据“within the next few years”可知，此处用一般将来时，“it”指代“solar paint”与“produce”之间为被动关系，应使用一般将来时的被动语态，所以填will be produced。
B Katie is reading an article about body heat harvesting at a train station in Sweden. Complete it with the correct forms of the words in the box.
collect produce send waste design reduce turn use
It's 8 a.m. at Stockholm Central Station, one of the busiest train stations in Sweden. Thousands of people are passing through on their way to work or school. With so many people moving around, a lot of body heat $^{(1)}$
This system for harvesting body heat $^{(4)}$
Other cities can learn from Stockholm Central Station. In the future, body heat $^{(7)}$
collect produce send waste design reduce turn use
It's 8 a.m. at Stockholm Central Station, one of the busiest train stations in Sweden. Thousands of people are passing through on their way to work or school. With so many people moving around, a lot of body heat $^{(1)}$
is produced
at the station every morning. Although we produce body heat all the time, this great source of energy $^{(2)}$ is
usually wasted
. But here, at Stockholm Central Station, it is collected. And soon, it $^{(3)}$ will be turned
into energy.This system for harvesting body heat $^{(4)}$
was designed
by local engineers more than 10 years ago. It collects body heat and uses the heat to warm water. The hot water $^{(5)}$ is sent
to a nearby building. There, it provides heat for the building and lowers energy costs. This successful system $^{(6)}$ will be used
by more buildings in the city as the need for clean energy increases.Other cities can learn from Stockholm Central Station. In the future, body heat $^{(7)}$
will be collected
from busy public places all over the world. As the use of body heat energy becomes more common, our need for traditional energy sources $^{(8)}$ will be reduced
.答案：(1)is produced；
(2)is wasted；
(3)will be turned；
(4)was designed；
(5)is sent；
(6)will be used；
(7)will be collected；
(8)will be reduced。
(2)is wasted；
(3)will be turned；
(4)was designed；
(5)is sent；
(6)will be used；
(7)will be collected；
(8)will be reduced。
解析：
(1)“With so many people moving around”表明有很多人走动，那么会产生很多身体热量，produce“产生”符合语境，且主语a lot of body heat是不可数名词，全文是一般现在时，所以此处用动词的第三人称单数形式produces。
(2)根据“But here, at Stockholm Central Station, it is collected.”可知这里收集身体热量，通常这种能量是被浪费了，waste“浪费”符合，这里用一般现在时的被动语态is wasted。
(3)身体热量被收集后，很快会被转化为能量，turn...into...“把……转化为……”，这里用一般将来时的被动语态will be turned。
(4)“more than 10 years ago”表明是一般过去时，系统是被设计，design“设计”符合，所以用一般过去时的被动语态was designed。
(5)热水被送到附近的建筑物，send“发送，运送”符合，用一般现在时的被动语态is sent。
(6)随着对清洁能源需求的增加，这个成功的系统将被城市里更多的建筑物使用，use“使用”符合，用一般将来时的被动语态will be used。
(7)在未来，世界各地繁忙的公共场所的身体热量将被收集，collect“收集”符合，用一般将来时的被动语态will be collected。
(8)随着身体热量能源的使用变得更加普遍，我们对传统能源的需求将会减少，reduce“减少”符合，用一般将来时的被动语态（这里our need和reduce是被动关系，即需求被减少）will be reduced。
(2)根据“But here, at Stockholm Central Station, it is collected.”可知这里收集身体热量，通常这种能量是被浪费了，waste“浪费”符合，这里用一般现在时的被动语态is wasted。
(3)身体热量被收集后，很快会被转化为能量，turn...into...“把……转化为……”，这里用一般将来时的被动语态will be turned。
(4)“more than 10 years ago”表明是一般过去时，系统是被设计，design“设计”符合，所以用一般过去时的被动语态was designed。
(5)热水被送到附近的建筑物，send“发送，运送”符合，用一般现在时的被动语态is sent。
(6)随着对清洁能源需求的增加，这个成功的系统将被城市里更多的建筑物使用，use“使用”符合，用一般将来时的被动语态will be used。
(7)在未来，世界各地繁忙的公共场所的身体热量将被收集，collect“收集”符合，用一般将来时的被动语态will be collected。
(8)随着身体热量能源的使用变得更加普遍，我们对传统能源的需求将会减少，reduce“减少”符合，用一般将来时的被动语态（这里our need和reduce是被动关系，即需求被减少）will be reduced。