1) ___________ express an obligation or necessity to do something a) must b) have to c) need d) all of them 2) When the speaker thinks personally that something is necessary, we generally use a) must b) have to c) need 3) We use ____________ and ___________ to say that someone else has decided what is necessary a) have to/ must b) have to/ need c) need/ must 4) The negative forms of have to and need to are very different from mustn´t a) true b) false 5) when we say that something is not necessary, or not important we use: a) don´t need/ doesn´t need b) don´t have to/ doesn´t have to c) both answers are correct 6) You can use needn´t and a verb to say something is not necessary a) true b) false 7) We use ___________ to say that something is prohibited. a) needn´t b) don´t have to c) mustn´t 8) What sentence is correct? a) You mustn´t run during an earthquake b) You don´t have to run during an earthquake c) You needn´t to run during an earthquake 9) What sentence is not correct? a) You needn´t wear a uniform b) You don´t have to wear a uniform c) You mustn´t wear a uniform

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