How to protect the Earth?
First, we shouldn't
Second, we
Third, we should
First, we shouldn't
litter
here or there. We should pick
up rubbish and put
it in the bin.Second, we
shouldn't
use too
many plastic bags
. Too much plastic is bad
for our Earth.Third, we should
plant
more trees. Trees can not only make our Earth beautiful
, but also help keep
the air
clean.答案：litter， pick， put， shouldn't， too， bags， bad， plant， beautiful， keep， air
1. Miss Wang and her students
2. Let me
3. Billy and his friends
4. We know
5. Can you see
are doing a project
.2. Let me
make a poster
first.3. Billy and his friends
put the poster at the school gate
.4. We know
how to protect the Earth
.5. Can you see
the bin under the tree
?答案：1. are doing a project 2. make a poster 3. put the poster at the school gate 4. how to protect the Earth 5. the bin under the tree
| Forests | Rivers |
| ·Home to the 1.
| ·Home to the 1.
animals
and plants. ·Use 2.double-sided
paper to save wood. ·3.Don't
use disposable chopsticks. | ·Collect rainwater and transport it to the ocean. ·4.Save
water instead of(而不是) wasting water. ·5.Reuse
water. |答案：1. animals 2. double-sided 3. Don't 4. Save 5. Reuse