从方框中为图片选择相应的短语，并用We should…或者We shouldn't…说一说。
A. pick up the waste paper
B. make the river dirty
C. care for the animals
D. clean the classroom
E. draw on the wall
F. waste water
G. play sports
H. play football on the street |
You should pick up the waste paper.
We shouldn’t make the river dirty.
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