Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is closest in meaning to the original sentence in each of the following questions.

Câu hỏi

We should turn off the lights to save energy when leaving a room.

Đáp án
B. Turning off the lights saves energy, so we should do it when leaving a room.

Câu hỏi thuộc Bài tập:

UNIT 10: ENERGY SOURCES TEST 02