He _____ to play _____ before he was years old.
A.had learned; piano
B.had learned; the piano
C.has learned ; the piano
D.learns ; piano
正确答案是B
He _____ to play _____ before he was years old.
A.had learned; piano
B.had learned; the piano
C.has learned ; the piano
D.learns ; piano
正确答案是B