2. 职称考试
  3. --You didn't attend the party last night? --No, I__________, for the party ...

--You didn't attend the party last night? --No, I__________, for the party ...

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问题 --You didn't attend the party last night?
--No, I__________, for the party was put off for some reason.
选项 A.couldn't have
B.needn't have
C.didn't need to
D.don't have to
答案C
解析考查情态动词。根据后半句的回答可知，聚会因为一些原因而被推迟，所以此人应该没有必要去参加昨晚的聚会。couldn’t have表示“过去不可能做过”，是一种否定推测，needn’t have表示“没必要去做，但是实际上已经做过了”，don’t have to表示“没必要，可以不”，但用于一般在时的复数或对本人的叙述，didn’t have to则用于过去时中(此时不分单复数)；didn’t need to表示“主语在过去不必要去做某件事”。根据语境可知C项最符合。
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