52单词网 > 高中英语 > 高中英语题库 > Since the 1980s, it possible to listen to British and American English at the fl

Since the 1980s, it possible to listen to British and American English at the fl

来源:网络 时间:
Since the 1980s, it possible to listen to British and American English at the fl

Since the 1980s, it ______ possible to listen to British and American English at the flick of a switch.

A. is

B. has been

C. had been

D. was

试题答案

B

解析: