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

Câu hỏi

If we go on littering, the environment _________seriously polluted.

A. becomes

B. will become

C. became

D. would become

Đáp án
B. will become

Câu hỏi thuộc Bài tập:

E9- Vào 10- Đề ôn 3