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

_______it is getting dark, we will not wait for him any longer.

A. Unless

B. While

C. Since

D. Although

Đáp án
C. Since

Câu hỏi thuộc Bài tập:

E9- Vào 10- Đề ôn 20