一.将下列句子改为祈使句.
1：Do your homework every day.
2：Don't arrive late for school.
3：Clean the classroom after school.
4：Don't speak loudly in the library.
5：Dno't listen to music in the classroom.
二.用have to或must填空.
1：Do you__have to___wash your clothes on Sunday?
2：He__have to__stay at home and look after his brother today.
3：You__must___finish your homework this afternoon.
4：They don't__have to___go there today.
5：__Must___she practice her guitar every day?
三.按要求完成下列各句.
1：You must come here early this afternoon.（改为祈使句）
__Come___here early this afternoon.
2：Give him some money.（改为否定句）
__Don't___ ___give__him__any___money.
3：Let her help you.（改为否定句）
__Don't___ ___let___her help you.
4：You can't be late next time.（改为祈使句）
__Don't___ __be___late next time.
5：please listen to the teacher carefully.（改为同义句）
__Listen__to the teacher carefully,__please___.