Task 4. Choose the correct answer.
1. Paul to do his homework tonight.
a. must b. can c. has
2. You have breakfast every morning,
a. can't b. mustn't c. have to
3. You ride your bike on the road.
a. mustn't b. have to c. can
4. You be late for classes.
a. can b. have to c. haven't to
5. You use your mobile phone in lessons.
a. have to b. can c. can't​