I ______ to him because he phoned me shortly afterwards.A、ought to not have writ

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问题 I ______ to him because he phoned me shortly afterwards.

选项 A、ought to not have written
B、shouldn’t have written
C、couldn’t have written
D、needn’t have written

答案 D

解析根据题意，表示“不必”，应用情态动词needn’t。

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