Correct form of the verbs
1. The doorbell( ring) while Tom ( watch) T.V
2. How fast you( drive) when the accident( happen)
3. Ann and Sunsan ( make) . Dinn er when Martin ( arrive) home.
4. The light ( go) out when we ( have) dinner, but it ( come) on again after about ten minutes.
5. It suddenly( begin) to rain while Laura(sit) in the garden.
6. What you (do) this time yesterday? I (work) on the computer.
7. It( be) cold when we ( leave) the house that day, and a slight snow( fall)
8. When i last( see) them they ( try) to find a new house near their work.
9. I ( walk) along the street when i suddenly( feel) something hit me in the back. I( not/ know) what it was
10. When we ( drive) down the hill , a strange object ( appear) in the sky