题目内容
Mrs. Wang often says to her child, “You ______ play with fire(火). It's dangerous.”
- A.mustn't
- B.hadn't better
- C.needn't
- D.may not
A
mustn't是不准,而needn't是不必,不需要。
mustn't是不准,而needn't是不必,不需要。
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