Something immediately to prevent teenagers from in factories and mines.

Câu hỏi :

Something        immediately to prevent teenagers from          in factories and mines.

A. should be done – being exploited

B. we should do – exploiting

C. should be – be exploited


D. should have been – exploited


* Đáp án

* Hướng dẫn giải

Chọn đáp án A

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