Exercise 4. Correct the mistakes if necessary 1. Were you find your keys yesterday? _________________________ 2. Was you draw the picture at 5 p.m. yesterday? _________________________ 3. What was she do while her mother was making lunch? _________________________ 4. Where did you went last Sunday? _________________________ 5. They weren't sleep during the meeting last Monday. _________________________ 6. Helen was wearing her dress to the party last night. _________________________ 7. While I was do my homework, I heard the doorbell. _________________________ 8. Tom was walking in the street when he suddenly was falling over. _________________________ 9. At this time last night, Susan didn’t going out with her friends. _________________________ 10. While Julie went down the street, it begin to rain. _________________________