改错。 【小题1】I' llhelp you about your maths. (______)___________ A B C D 【小题2】Thisiswelibrary. (______)___________ A B C D 【小题3】We often playa piano in the music club. (______)___________ A B C D 【小题4】Takecareofyouself. (______)___________ A B C D 【小题5】Aretheyplayfootball? (______)___________ A