3. Complete the sentences:

should / shouldn't / must / mustn't/have to / don't,
doesn't have to /can/can't.
1. We
keep the house clean.
2. You
have a short hair in the army. It is the rule of
the army.
3. It's Sunday. Dan
get up early.
speak Spanish, but I speak English
5. We
cross the street on the red light.
be afraid of modern inventions.
6. You
7. They
be in a hurry, because they have enough
time.
8. You
read this text. It's interesting!​