3. Complete the sentences using can, can’t, have to,has to,don’t have to,doesn’t have to or mustn’t. Use each option only once.

I. .........have my own Facebook page –I’m too young.

2.Juan’s mum says he........ go to bed now –it’s really late!

3.You......... drop litter –it’s against the law.

4.Claire and Toni.......... catch the bus –they have enough money.

5.Do you really.......... leave now? It’s still quite early.

6.Piotr........... buy a ticket for the concert –he’s already got one.

7.Are you sure that we.......... tell your mum and dad we’re going to be late? They might get worried.