He _____ to play _____ before he was 8 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 8 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