牛津7B Unit6 Period Five Grammar(1)课时作业
一、根据句意及中英文提示填空。
1 My parrot often knocks on the door of the c_________ when he is hungry.
2 How often should we clean the fish t_________?
3 Dogs need a lot of ____________ (锻炼).
4 We’d better not give the little cat fish b_________.
5 We should keep our classroom ___________ (干净) and tidy.