1. you go swimming in the river. it's too dangerous. a) don't have to; b) must; c) musn't 2. my dad my mum in 1984. a) met; b) used to meet; c) was meeting 3. believe in vampires? a) did you use; b) you used to; c) did you used to 4. it' s katie's birthday tomorrow. i remember to buy her a card. a) must; b) musn't; c) don't have to 5. we live in a house, but er live in one now. a) used to; b) didn't use; c) didn't use to
1. c) musn't
2. a) met;
3. a) Did you use;
4. a) must;
5. b) didn't use;