1. A: What happened to Alex??
B: He was playing football when he fell over and broke his leg.
A: Did he go to hospital?
B: Yes, he did.
2. A: When did you see Tony?
B: While I was waiting at the bus stop yesterday morning.
3. A: I was calling you last night but you 2)didn't answer
Where were you?
B: I exercised at the gym.
4. A: What were doing your kids, when you came home last night?
B: They were watching a film on television.