For thousands of years, man (A) has created sweet-smelling (B) substances from wood

Câu hỏi :

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

A. man

B. sweet-smelling

C. using them

D. or

* Đáp án

C

* Hướng dẫn giải

Đáp án C

Sửa using them -> used them

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