Complete the sentences, using must not / mustn't or do not / don't have to

We ... hurry. There's plenty of time

перевести текст. - What must I do now? Am I ready, Mum? - No, you are not. Not yet. Now you must go through security control. - Must I show them my passport? - No, you need not there, but you must show it to them at passport control.

Example: You must / don't have to tidy your room. It's a mess. 1 You don't have to / mustn't swim there. It's dangerous. 2 I haven't to / don't have to do my homework. It's Saturday. 3 She must / mustn't practise the piano tonight.

Underline the correct modal verbs: 1) Scientists don't have to/must consider the dangers of cloning. 2) People mustn't/don't have to be experts to operate a DVD player. 3) You must/mustn't switch off your computer when it is not in use.

Underline the correct form. Example: You must / don't have to tidy your room. It's a mess. 1 You don't have to / mustn't swim there. It's dangerous. 2 I haven't to / don't have to do my homework. It's Saturday.

Найдите в разговоре указания, в которых не использованы must/must not, и напишите их, используя must / must not / need not. Don't worry, Mom. He get two hours. No, not really. Rob bag isn't heavy.