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

Câu hỏi

These smart technologies will help save energy, reduce air ___________ , and fight climate change.

A. footprint

B. pressure

C. pollution

D. warming

Đáp án
C. pollution

Câu hỏi thuộc Bài tập:

E11- Unit 3- Practice 3