Read these sentences and choose 'must' or 'mustn’t'.

1. You do your homework.

2. You play with fire.

3. We respect our teachers.

1) must"n
must
2) must"n
must
3) must"n
must

1)You must do your homework.

2)You mustn't play with fire.

3)We must respect our teachers.

1. You must do your homework.

2. You mustn't play with fire.

3. We must respect our teachers.

1. i knew this person2. he read the book3. you do this exercise