1) We use _____ to talk about sth that is important or necessary, a) must b) have to c) be allowed to d) may e) can 2) ___ shows that the speaker feels the action is necessary or important. a) must b) have to c) be allowed to d) may e) can 3) ___ shows that the action is necessary because someone else says so, or because of a rule or law. a) must b) have to c) be allowed to d) may e) can 4) ___ is often used for written instructions. a) must b) have to 5) ___ is more common. a) must b) have to 6) We use ___ not MUST to talk about the past and the future a) must b) have to 7) We usually use ___ in questions a) must b) have to 8) __ means it's not necessary. a) mustn't b) don't have to 9) __ means it's prohibited/it's important that you don't. a) mustn't b) don't have to 10) To express permission we use a) must b) have to c) can d) be allowed to e) may 11) To express permission in the past we use a) must b) have to c) can d) be allowed to e) may f) could 12) To express general permission in the past we use a) must b) have to c) can d) be allowed to e) may f) could 13) To express permission on a special occasion in the past we use a) must b) have to c) can d) be allowed to e) may f) could 14) To ask for permission we use a) must b) have to c) can d) be allowed to e) may f) could

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