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题型：单选题题类：模拟题难易度：普通

—Look at the boy running on the ground. Is it Davis?
—It ______ be him. I saw him go to the teacher's office just now.

A、mustn't B、can't C、could D、might

举一反三

— ______ I sing here, Jim?

— Sorry, I'm afraid you ______.

As everyone knows, rubbish everywhere.

{#blank#}1{#/blank#}you tell me where the station is? （填情态动词）

Ants are pretty small. You might think that they _________be rather weak. But what you might not know is that ants are actually very strong for their size.

—Must I finish my homework now?

—No, you _______.

—Must I hand in my book report this afternoon?

—No, you . You can hand it in next Monday.

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