Exercise 1

1) I used my time well while I (wait)  for my plane - I wrote some emails.
  

2) I (not/work)  when my boss walked in my office. 

3) When I (wait)  for the taxi, I saw two car crashes. 

4) Tom (have)  long hair and a beard when he was at university. 

5) It started snowing while I (drive)  to work. 

6) What (you/do)  this time last year? 

7) I (not/call)  you at 9 o'clock as arranged because I was having a meeting. 

8) I (still/sleep)  when my wife left for work this morning.

9) Why did you bring your umbrella? (it/rain)  when you left home? 


10) My laptop (stop) when the battery ran out.