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题型：单选题题类：常考题难易度：普通

—Do you plant trees in spring, Mike?
—Yes. Many trees ________ in our city every year.

A、plant B、are planting C、have planted D、are planted

举一反三

—-Don't smoke here, Dad. Smoking _____ in public places.

—-Oh, sorry. I'll stop right now.

— I'm afraid I can't finish the task in such a short time.

— Don't worry. Can you finish it if you two more days?

I don't see how I could possibly manage the work without .

We should mend the door. (改为被动语态)

Corn {#blank#}1{#/blank#} (grow) three times a year.

— Have you finished your report on green life?

— Not yet. I'll make it if I _________________ another two days.

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