Câu hỏi:
17/06/2026 402The assumption that smoking has bad effects on our health have been proved.
A. that
B. effects
C. on
D. have been proved
Trả lời:
Giải bởi Vietjack
Đáp án D sửa thành “has been proved”
Giải thích: Chủ ngữ của câu là “the assumption” ngôi 3 số ít nên động từ chính sẽ đi với trở động từ là “has”
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