In 1876, the telephone first introduced by Bell and Watson.

Câu hỏi :

In 1876, the telephone                         first introduced by Bell and Watson.

A. was

B. is

C. has been  

D. had been

* Đáp án

* Hướng dẫn giải

Chọn đáp án A

Copyright © 2021 HOCTAP247