Past Simple or Past Continuous

He_____ (make) dinner when the phone_____ (ring).

While I_____ (go) up the stairs, I _____ (hear) a strange noise.

He_____ (cross) the road when he_____ (see) a car coming towards him.

Ken_____ (have) lunch with his friends a few days ago.

George_____ (watch) a scary film last night at 10 o' clock.

Kate_____ ( scream) when she_____ (see) the ghost.