-Do you know umbrellas are provided for free at the underground station?-Yes. But we return the in a week, or we’ll pay for them.A.must B.can C.needn’t D.can’t 题目和参考答案——青夏教育精英家教网—

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—Do you know umbrellas are provided for free at the underground station?

—Yes. But we________ return the in a week, or we’ll pay for them.

A.must B.can C.needn’t D.can’t

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