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

I ... forget to send Pete a birthday cake

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.

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.

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.

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.

Выбрать правильный вариант: 1. He says I (mustn't/needn't) do it. He has already done it. 2. You (needn't/mustn't) carry your driving license with you. 3. I can show my student's card, and I (mustn't/needn't) pay to get in. 4.