Explications:
Salut, je vais t'aider. On doit conjuguer au préterit be+V-ing :
a. Tom was watching TV while his parents were preparing the meal.
b. What were you doing when you met your english teacher?
c. We were shopping when we met her.
d. While the teacher was reading the text, the students were playing tricks.
e. Whille Anne... Henry VIII was playing tennis.
