If the green light doesn’t come on, you go across the street. A. must B. mustn’t ——青夏教育精英家教网—

摘要： If the green light doesn’t come on, you go across the street. A. must B. mustn’t C. needn’t D. have to

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If the green light doesn’t come on, you ____ go across the street.

A. must B. mustn’t C. needn’t D. have to

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