问题 选择题

He _____ play the piano since he was young. He is very famous now.

A.has could

B.has been able to

C.could

D.was able to

答案

答案:B

考查时态和固定短语。根据since he was young,可知主句中用现在完成时,故排除A,C,D,选B。

多项选择题
单项选择题