Complete the sentences with the correct form of the verbs in brackets. Use the past simple or past continuous.

1 _______________ (Tom / study) when you _______________ (come) back home this afternoon?

2 While I _______________ (tidy) my room last week, I _______________(find) some of my old comics.

3 The teacher _______________ (get) really angry with Mark and Eric during the history lesson because they _______________ (not listen) to her.