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

I’m going away for a few days. I’ll phone you ______ I get back.

A. if

B. whether

C. until

D. when

Đáp án
D. when

Câu hỏi thuộc Bài tập:

E10- I-learn- Unit 8 (2)