Past simple vs Past continuous + when and while

Hello Anna, what _______ (you / do) when I called you last night?

• do you do

• did you do

• didn't do

• were you doing

I was listening to the radio when you ________(call) me.

• called

• calt

• were calling

• was calling

We were walking in the mountains when we_________ (see) a strange animal.

• seed

• saw

• seen

• stoped

When he opened the window, it __________ (snow).

• was snowed

• was snowing

• were snowing

• snowed

She met them at the station while she _________ (wait) for her train.

• was waiting

• were waiting

• waited

• wanted

I couldn’t answer your call because I __________(drive)

• were driving

• drived

• drove

• was driving

He ________(miss) the train because he was talking with some friends

• missed

• was missing

• were missing

• mist

If we see the word while in a sentence, it is followed by...

• Past simple

  (-ed)

• Past continuous

  (was/were + ing)

If we see the word when in a sentence, it is followed by...

• Past simple

  (-ed)

• Past continuous

  (was/were + ing)

Complete with when or while

"We were playing basketball ____ it began to rain"

• when

• while