Indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Câu hỏi

New particles are formed in the polluted air of major cities.

A. contaminated

B. disappeared

C. purified

D. endangered

Đáp án
A. contaminated

Câu hỏi thuộc Bài tập:

E11- GS- Unit 5- Practice 5