Mark the letter A, B, C or D on your answer sheet to indicate the sentence that is made from the given cues in each of the following questions.

Câu hỏi

If we/ able/ collect solar energy/ we/ be sure/ have enough power.

Đáp án
D. If we are able to collect solar energy, we will be sure to have enough power.

Câu hỏi thuộc Bài tập:

UNIT 10: ENERGY SOURCES TEST 02