School exams are, generally speaking, the first kind of test we take. They find out

Câu hỏi :

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase for each of the blanks.

A. on 

B. in 

C. at 

D. to

* Đáp án

C

* Hướng dẫn giải

Đáp án C

at which = at the speed: ở tốc độ ..

Copyright © 2021 HOCTAP247