Underline the correct form of the verb: A: What were you doing/did

Underline the correct form of the verb: A: What were you doing/did you do at the weekend?

B: Well, we painted/were painting the sitting-room when the lights were going/went off!

A: What was happening/happened?

B: Jenny was slipping/slipped off the ladder and was breaking/broke her leg!

A:Whatdid the children do/were the children doingatthetime?

B: Jules was playing/played with the dog and Claire was talking/talked on the phone.