1) There are plenty of tomatoes in the fridge. You___buy any. a) mustn't b) needn't c) may not 2) This is a hospital. You___smoke here. a) mustn't b) needn't c) must 3) He had been working for more than 11 hours. He___be tired after such hard work. a) must b) need c) had better 4) I___speak Arabic fluently when I was a child and we lived in Morocco. a) could b) might c) can 5) The teacher said we___read this book for our own pleasure as it is optional. a) can b) needn't c) must 6) ___you stand on your head for more than a minute? a) May b) Can c) Must 7) If you want to learn to speak English fluently, you___worry. We will help you become a fluent speaker but you have to work hard. a) could b) need c) needn't 8) Take an umbrella. It___rain later. a) need b) might c) mustn't 9) People___walk on the grass. a) couldn't b) needn't c) mustn't 10) Drivers___stop when the traffic lights are red. a) could b) must c) may

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