1) I...go to the doctor's yesterday. I felt sick. a) must b) have to c) had to 2) You...be late for class. a) have to b) don't have to c) mustn't 3) You...look both ways when crossing the road. a) has to b) don't have to c) must 4) I...get up early to arrive in school on time. a) have to b) mustn't c) doesn't have to 5) You...get up early. The program starts in the afternoon. a) must b) mustn't c) don't have to 6) Does he...do the exam this year? a) must b) have to c) has to 7) We...pay for the food. We can eat for free. a) don't have to b) mustn't c) have to 8) You...touch that switch. It's very dangerous. a) have to b) don't have to c) mustn't 9) I don't want anyone to know. You...tell anyone. a) don't have to b) mustn't c) must 10) Peter...get up early. He gets up early because he wants to. a) mustn't b) doesn't have to c) must

must, mustn't, have to, don't have to

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