While I (walk) .......... to school, I (stop) .......at a shop to buy some sweets.
was walking/ stopped
When my mom (open) .... the door, I (do)..... my homework.
opened/was doing
The train (start)..... while the guard (blow)... the whistle.
started/ was blowing
While the girl (cry).... her mum (try) to help her.
was crying/tried
My sister (not / drop) ...the milk while she (have) ....breakfast.
didn't drop/was having
The dog (bark).... when the postman (arrive).
was barking/arrived
(We / listen)... to music when the lights (go off) ....?
Were we listening/went off
The man (swim)... when the boy (fall)... to the pool.
was swimming/fell
Elsa (ice-skate).... when everything (freeze) ... around her.
was skating/froze
(The princess / play)...with a ball when she (see)... a frog.
was the princess playing/saw
Boys (not/read)....a book when some girls (push) him to the floor.
weren't reading/pushed
(The parrot / fly).... when the man (catch) ...it?
Was the parrot flying/caught
The doctor (not / operate on) ... the patient when he (wake up).... .
wasn't operating/woke up
The tigers (hunt) ...when a man (appear) .... and (shoot)... one of them.
were hunting/ appeared/shot
They (not / dance)... when a policeman (knock)... on the door.
weren't dancing/knocked
(My granny / sew) .... when her husband ( leave).... the house?
Was my granny sewing/left
