1. You ... go swimming in the river. It's too dangerous.a) don't have to; b) must; c) musn't2. My dad ... my mum in 1984.a) met; b) used to meet; c) was meeting3. ... 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 to5. We ... live in a house, but er live in one now.a) used to; b) didn't use; c) didn't use to
a) used to