Іт past continuous and one in the past simple. 1. he/ sit down/ on a chair/ while/ i / paint/ it 2. as/ he/ run/ for a bus/ he/ collide/ with a lamppost 3. his hair/ catch/ fire/ when/ he/ cook/ chips 4. when/ he/ hold/ a beautiful vase/ he/ suddenly/ drop/ it 5. he/ sit/ in the garden/ when/ a waps/ sting/ him/ on the nose

1. he/ sat down/ on a chair/ while/ I was painting/ it
2. as/ he/ was running/ for a bus/ he/ collided/ with a lamppost
3. his hair/ caught fire/ when/ he/ was cooking chips
4. when/ he was holding a beautiful vase/ he/ suddenly/ dropped/ it
5. he/ was sitting in the garden/ when/ a wasp/ stung/ him/ on the nose