They keep connected with each other the telephone. 【查看更多】

 

題目列表(包括答案和解析)

They use computers to keep the traffic _______ smoothly. 

A. being run       B. run         C. to run        D. running

查看答案和解析>>

They use computers to keep the traffic _______ smoothly. 

A. being run       B. run         C. to run        D. running

查看答案和解析>>

They use computers to keep the traffic _______ smoothly. 

A. being run       B. run         C. to run        D. running

查看答案和解析>>

They use computers to keep the traffic _______ smoothly. 

A. being run       B. run         C. to run        D. running

查看答案和解析>>

They use computers to keep the traffic _______ smoothly. 

A. being run       B. run         C. to run        D. running

查看答案和解析>>


同步練習(xí)冊答案