Bộ câu hỏi: Giới từ ( Buổi 2) (Có đáp án)
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The campaign was successful _______ convincing people to stop smoking. A. in B. on C. of D. to

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The campaign was successful _______ convincing people to stop smoking.

in

on

of

to

Giải thích

Chọn đáp án A