Answer:
Step-by-step explanation:
8.While Diana was watching her favourite program, there was a power cut.
9.Who was driving the car at the time of the accident?
10.I was doing some shopping yesterday when i saw that Dutch friend of yours.
11.What exactly were you doing when I came into your office yesterday?
12.While I was trying to get my car started, a man offered to help me.
13.Although it rained a lot, I enjoyed my holiday
14.I phoned you yesterday but you did not answer. What were you doing?