（
A.can't
B.shouldn't
C.can
C
）1. We make changes now to save energy.A.can't
B.shouldn't
C.can
答案：1. C
(
—We can use less electricity.
A. can
B. should
C. do
(
A. comes
B. was
C. came
(
—Yes. That save water too.
A. can; should
B. should; would
C. can; will
(
A. run
B. are running
C. are going to run
A
) 2. —How we help our Mother Earth?—We can use less electricity.
A. can
B. should
C. do
(
A
) 3. Water from rivers, lakes and seas.A. comes
B. was
C. came
(
C
) 4. —Maybe we take quick showers to save energy.—Yes. That save water too.
A. can; should
B. should; would
C. can; will
(
B
) 5. We out of resources. We need quick changes.A. run
B. are running
C. are going to run
答案：2. A 3. A 4. C 5. B
Ⅸ. Complete the sentences.（按要求完成句子。）
1. We can recycle boxes to save resources.（对画线部分提问）
2. We shouldn't wash our dirty clothes one at a time.（改为同义句）
We
3. We should walk less and drive more.（从节约资源的角度改写句子）
We should walk
4. —
—We use green energy to cool our homes and schools.
5. bring, should, own, we, bags, shops, our, to (.)（连词成句）
1. We can recycle boxes to save resources.（对画线部分提问）
What
can
we
do
to save resources?2. We shouldn't wash our dirty clothes one at a time.（改为同义句）
We
should
wash all our dirty clothes together
.3. We should walk less and drive more.（从节约资源的角度改写句子）
We should walk
more
and drive less
.4. —
How
do
we
use
green energy?（根据答语写问句）—We use green energy to cool our homes and schools.
5. bring, should, own, we, bags, shops, our, to (.)（连词成句）
We should bring our own bags to shops.
答案：1. What can we do 2. should; together 3. more; less 4. How do we use 5. We should bring our own bags to shops.