1) It's late. You .... make so much noise. a) mustn't b) must c) have to d) doesn't have to 2) You ... wash the dishes if you don't want to. I'll do it later. a) must b) mustn't c) don't have to d) must to 3) We .... do more exercise to stay fit. a) don't have to b) mustn't c) must d) has to 4) You .... go there. It's dangerous! a) mustn't b) must c) don't have to d) must not to 5) This is an extra exercise. You .... do it, if you don't want to. a) mustn't b) don't have to c) must d) has to 6) She ... walk there. She could go there by car. a) must b) mustn't c) doesn't have to d) doesn't has to 7) He ... stop! What he's doing is horrible. a) must b) mustn't c) doesn't have to d) must to 8) You ... break windows in your school. a) must b) mustn't c) don't have to d) doesn't have to 9) The surgeon ... forget to wash his hands before surgery. a) mustn't b) must c) has to d) have to 10) You ... always tell the truth in court. a) mustn't b) must c) has to d) must to

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