There are a number of (A) reason why population (B) is concentrated in temperate

Câu hỏi :

Mark the letter A,B,C or D on your answer sheet to show the underlined part that needs correction in each of the following question

A. reason

B. is concentrated

C. availability

D. the most important

* Đáp án

* Hướng dẫn giải

Đáp án : A

A: reason -> reasons

There are a number of + N (số nhiều)

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