Everyone wants to reduce pollution. But the pollution problem is (11) ________ complicated as

Câu hỏi :

Passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word for each of the blanks from 11 to 20

A. of

B. about     

C. with       

D. for

* Đáp án

* Hướng dẫn giải

Đáp án là A

much of + the + N ( uncountable) : nhiều ...

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