Fill in the correct form of the verb.

1. The wind ... when we ... in the open sea. 2. She ... the children play at this time yesterday. 3. They ... when she ... . 4. I ... abroad when I ... his letter. 5. She ... when she ... me in the street. 6. It ... all the evening yesterday. 7. When I ... the classroom, everybody ... at the desks. 8. My friend ... at 1 o’clock yesterday. 9. We ... breakfast when the postman ... . 10. Mary ... ready for the exam while I ... .