I______to him because he phoned me shortly afterwards.

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问题 I______to him because he phoned me shortly afterwards.

选项 A、need not to have written
B、needn’t have written
C、needn’t having written
D、need haven’t written

答案B

解析情态动词题。needn’t have done意为“其实没有必要做……”。因此，[B]为答案。

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专业英语四级

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