Solar energy doesn’t cause pollution, but it is not cheap

Câu hỏi :

Mark the letter A, B, C or D to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

A. expensive

B. effective

C. commercial

D. possible

* Đáp án

* Hướng dẫn giải

Đáp án

A

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