It was very kind of you to clean the off

考试题库2022-08-02 12

问题 It was very kind of you to clean the office, though you ____.（　　）A． needn’t do B． wouldn’t have C． didn’t have to D． mustn’t have done

选项 A． needn’t do
B． wouldn’t have
C． didn’t have to
D． mustn’t have done

答案 C

解析 have to表示“不得不”，前加否定，表示“用不着”。

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