Some scientists say that it is still not too late to minimize the effects of climate

Câu hỏi :

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.

A. in case

B. so that

C. even if

D. provided that

* Đáp án

D

* Hướng dẫn giải

Đáp án D

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