按要求完成下列各题。(12分)
（1）I come from America．(就画线部分提问)
________ ________ you ________ ________？
（2）often，on，go，we，trips，field(连词成句)
________________________________________________________________________．
（3）We have many projects to do.(改为否定句)
We ________ ________ any projects to do.
选择填空。
（1）We can ___________ to school.
（2）We can __________ form our city.
（3）We can ____________, they help keep the air clean.
（4）My grandpa doesn’t like ___________, because he’s a farmer.
（5）______________ makes the air dirty.
根据上下文，补全对话。(12分)
A: Look our classroom.
B: Oh, it is very dirty.
A: Let’s keep our classroom .
B: All right. I can the rubbish the bin.
C: I can the floor with Lily.
D: I can the desks and chairs.
A: Good idea. Let’s start.
B&C&D: OK!
听录音，补全短文。(10分)
Our city ______ messy and ______ because of the ______ and rubbish. To keep the city ______, we should do our best. We can take the bus or ______ to school every day. We can put rubbish in the ______. We can ______ ______ trees. They ______ keep the ______ clean.
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