Câu hỏi

Switching to ________ light bulb is one way to protect the environment.

A. energy-expending

B. energy-wasting

C. energy-saving

D. energy-lacking

Đáp án
C. energy-saving

Câu hỏi thuộc Bài tập:

Ms. Dung Purple - Unit 2: Humans and the Environment - Vocabulary