Bộ câu hỏi: Giới từ ( Buổi 2) (Có đáp án)
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With waves of layoffs in many countries, some people are worried _______ losing their jobs. A. about B. on C. of D. in

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With waves of layoffs in many countries, some people are worried _______ losing their jobs.

about

on

of

in

Giải thích

Chọn đáp án A