O Complete the dialogues. Use don't have to, doesn't have to, must or mustn't. Becky Hurry up! We ¹ late for school! Linda We 2 Steve Mum today! It's Sunday! Can I go to Mark's house? Yes, but you home late. Karen Mum 4 go to school be do it. Toby I'll ask my dad to fix my bike. 6 Dan You come tidy the living room before the party. David I've already tidied the living room. Mum 5 tidy it. ask him. I can​

Becky: Hurry up! We **mustn't** be late for school!

Linda: We **don't have to** go, Steve. Mum doesn't have to work today! It's Sunday! Can I go to Mark's house?

Becky: Yes, but you **must** be home late.

Karen: Mum **doesn't have to** go to school, but you must do it.

Toby: I'll ask my dad to fix my bike.

Dan: You **don't have to** come tidy the living room before the party.

David: I've already tidied the living room. Mum **doesn't have to** ask him. I can ask him.