15000 bài tập tách từ đề thi thử môn Tiếng Anh có đáp án (Phần 53)
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You ______ so politely at the party. Everyone was casually dressed A. mustn't have dressed B. needn't have dressed C. couldn't have dressed D. didn't need to dress

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

mustn't have dressed

needn't have dressed

couldn't have dressed

didn't need to dress

Giải thích

Đáp án B

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