1.They (meet) while they (study) at university 2. I (not listen) when the teacher (explain) the problem 3.We (see) Sue

1. They met while they were studying at university. 2. I didn’t listen when the teacher was explaining the problem 3.We saw Sue when we were playing in the park. 4. When I got up this morning it wasn’t raining. 5. What were you doing when I phoned? 6. What did you do last weekend? 7. I didn’t go to school yesterday because I was sick.