You ______ so politely at the party. Everyone was casually dressed

Câu hỏi :

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

A. mustn't have dressed

B. needn't have dressed

C. couldn't have dressed

D. didn't need to dress

* Đáp án

B

* Hướng dẫn giải

Đáp án B

needn't have dressed: không cần làm gì nhưng vẫn làm

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