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。
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: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。