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

Câu hỏi

Please turn off all the lights when ______.

A. you leave

B. you will leave

C. you will leave left

D. you had left

Đáp án
A. you leave

Câu hỏi thuộc Bài tập:

E9- Vào 10- Đề ôn 29