We should put more recycling bins in our schoolyard.

A. What do we need to do?

B. Why should we do that?

C. How should we get there?

D. When should we start the clean-up?

Đáp án
B. Why should we do that?

Câu hỏi thuộc Bài tập:

ĐỀ KIỂM TRA - TA8 ISW - Unit 3 - Protecting the Environment