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

Câu hỏi

Our future house will use _______________ energy, because it is very friendly to the environment.

A. solar

B. rainbow

C. sun

D. sunny

Đáp án
A. solar

Câu hỏi thuộc Bài tập:

E6- GS- Unit 10: Test for unit