问题补充:
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:
A. has could
(答案→)B. has been able to
C. could
D. was able to
解析: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。
时间:2023-01-20 03:14:08
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
A. has could
(答案→)B. has been able to
C. could
D. was able to
解析: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。
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