Question

Example: Mum cook / Anna watch TV
While Mum was cooking, Anna was watching TV.
a. Dad read the newspaper / Tim do his homework
b. the boy dive / his friend fish
c.the chef cut vegetables / his assistant make the fruit salad
d. the teacher write on the board / children draw pictures

Answer 1

a. While dad was reading the newspaper, Tim was doing his homework. 
b. While the boy was diving, his friend was fishing.
c. While the teacher was writing on the board, children were drawing pictures.