1. You're in a hospital. You ... shout!

a. must b. mustn't c. don't have to.

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.

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.

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.

Подставить верную букву: 1. I ... the washing by hands because our washing-machine is broken. a) have to do b) must do c) have do d) must to do 2. I think you ... at once or I'll call the police. a) have to go b) must go c) have go (1) must to go 3.