a) As I was driving home, a policeman stopped me and asked me for my driving license.
b) Why you laughed when he said his name?
c) Last night when I arrived home, my parents were having dinner.
d) The secretary was typing a letter when her boss asked her for a coffee.
e) When I woke up this morning it was raining.
f) The film was so boring that I left the movies.
g) Who were you talking to when I met you yesterday?
h) The couple were dating when a thief robbed them.