Mark the letter A, B, C or D to indicate the correct answer to each of the following questions.

Câu hỏi

Although we are aware _______ the importance of environment, we still overexploit it.

A. from

B. on

C. for

D. of

Đáp án
D. of

Câu hỏi thuộc Bài tập:

Ms. Dung Purple - Unit 9: Protecting the Environment - Vocabulary