Question

III. Complete the sentences with must (not), (do not) have to, need (not), can (not), could (not)

21. You ______________ lock the door when you go out. There have been a lot of break-in recently.
22. A person ____________ to become rich and famous in order to live a successful life.
23. I don’t want anyone to know this. You ______________ tell anyone.
24. Susan: We have enough food for dinner, so I______________go shopping today.
25. We ____________ repair the car ourselves. We took it to garage.

Answer 1

21. must

22. do not have

23. cannot

24. need not

25. could not

Explanations:

Must: have to

Need not: not compulsory

Answer 2

must,have,do not,cannot, have to