It was unkind of you to say that; you really______done so.

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问题 It was unkind of you to say that; you really______done so.

选项 A、should not
B、should not have
C、need not
D、must not

答案B

解析 虚拟语气。情态动词should not+have done结构表示“本不该……”。
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