问题 改错题 下列各句均有一处错误,请找出并改正。( )1. The boy is good at play football. A B C D ( )2. He often plays a piano A B C D ( )3. He is born in Beijing A B C D ( )4. When did he start sing? A B C D ( )5. He became a player at the age eighteen. A B C D _______ _______ _______ _______ _______ 答案 1. C, playing 2. C, the 3. A, was 4. D, singing 5. D, at the age of