Insert to before the infinitive where necessary.
1.It is very late, you must ________ be off.
2. I saw my neighbour _______ climb the stairs.
3. I make myself _________ push-ups every morning.
4. You had better ________ tell your teacher the truth about the incident.
5. Let him __________ do what he likes, I don’t care.
6. Could you ________ tell me the way to the bus station?
7. We agreed _____ meet the next day.