1) You _____ wear warm clothes in winter. a) mustn't b) should c) don't have to 2) ____ I ask you a question, please? a) must b) shouldn't c) may 3) It is raining now, you _____ an umbrella. a) need b) must c) can 4) _____ I use you phone to call a taxi? a) must b) have c) may 5) We are in the library. We _____ be quiet. a) can't b) must c) can 6) You look sick, you _____ visit a doctor. a) should b) may c) can't 7) Drivers _____ stop, when the traffic lights are red. a) may not b) must c) don't have to 8) You _____ eat more fruits for your health. a) have b) needn't c) should 9) I _____ another pen, because my pen doesn't write. a) need b) can c) may 10) In my opinion, you visit your grandparents. a) mustn't b) don't have to c) should

Modal verbs

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