Put the werbs in brackets into the past simple or past continuous form.
1. when mother (to enter ) his room, he(to draw ) a picture
2. when her aimt (to air) the room, she (to catch) cold
3. while (to talk) my the phone, my pets (to play) in the garden
1. When mother entered his room, he was drawing a picture .
2. When her aunt was airing the room, she caught cold .
3. While I was talking by the phone, my pets were playing in the garden.