Past Sim vs Past Con

Yesterday at 9.30 p.m., my parents were sitting in the garden and ________(drink) some coke.

Somebody knocked the door while I _____(read) the newspaper.

My brother bought a lot of book when he _______(live) in London.

William ________(not meet) Sally at the airport last Saturday.

Jerry _______(have) dinner when the light went out.

When I arrived at the wedding, Mike _____(introduce) me to some friends.

Richard ________(teach) at the university when he met his wife.

_______she was running in the park, someone caught her.

While I _______(write) a letter, my sister was eating her food.

A: ____________________at last night 9pm? (you/do)

B: I was watching TV.