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

Câu hỏi

Overpopulation problems ____________ both the rich and the poor.

A. happen

B. affect

C. cause

D. reduce

Đáp án
B. affect

Câu hỏi thuộc Bài tập:

E7- GS- Test after Units 10 & 11