1) I ________ call my mother today. It's her b-day. a) have to b) mustn't c) don't have to 2) I really ______do more exercise, I'm so unfit. a) must b) don't have to c) mustn't 3) I'm lucky because I _______ get up early in the morning. I work second shift today. a) shouldn't b) mustn't c) don't have to 4) I think you _______ study harder. Your exam results weren't very good. a) have to b) must c) don't have to d) mustn't 5) You ______be afraid of taking risks, or you will never make your dreams come true. a) mustn't b) must c) have to d) don't have to 6) I _________waste so much time on the computer. I'll never finish my work a) don't have to b) mustn't c) have to 7) His company provides him with a computer so he _________buy a new one. a) has to b) doesn't have to c) must d) mustn't 8) If you don't want to pay the fine, you ______smoke at public transport a) mustn't b) don't have to c) must

Have to/must controlled

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