将下列句子改成祈使句，并将其改为祈使句的否定形式。
1、They come to the front and point to me.
2、You can sit on this seat.
3、He is listening to music.
4、You are a good man.
5、He is cleaning the classroom.
6、She can wash clothes for her grandma.
7、You should stay at home today.
8、Tom can answer my questions.
9、You would like to read the new words for us.
10、They are sweeping the floor.
11、You did your homework carefully.
12、They can take bus No. 5 to No. 1 Middle School.
13、You should do it again.
1、Come to the front and point to me.
Don't come to the front and point to me.
2、Sit on this seat.
Don't sit on this seat.
3、Listen to music, please.
Don't listen to music.
4、Be a good man.
Don't be a good man.
5、Clean the classroom.
Don't clean the classroom.
6、Wash clothes for her grandma.
Don't wash clothes for her grandma.
7、Stay at home today.
Don't stay at home today.
8、Answer my questions.
Don't answer my questions.
9、Read the new words for us.
Don't read the new words for us.
10、Sweep the floor.
Don't sweep the floor.
11、Do your homework carefully.
Don't do your homework carefully.
12、Take bus No. 5 to No. 1 Middle School.
Don't take bus No. 5 to No. 1 Middle School.
13、Do it again.
Don't do it again.