Complete the right modal verbs to complete the sentences.

Choose the correct option.

You [doesn't have to|mustn't|don't have to] use your phone in class! It's forbidden.

[Do she have to|Does she has to|Does she have to] go to school on March 8?

Mark [have to have got|must have got|must get] off work early. He called me ten minutes earlier than usual.

We [don't have to|doesn't have to|mustn't] sell the car. It's in pretty good shape.