1 I suddenly remembered that I had forgotten
my keys.
2 While Diana was watching her favourite
television programme, there was a power cut.
3 Tom used to live in the house at the end of
the street.
4 Who was driving the car at the time of the
accident?
5 By the time Sheila got back, Chris had gone.
6 David had eaten Japanese food before, so he
knew what to order.
7 I was doing some shopping yesterday, when I
saw that Dutch friend of yours.
8 I used to like sweets much more than I do
now.
9 What exactly were you doing when I came into
your office yesterday?
10 Laura missed the party because no-one had
told her about it.
11 Tanya used to be a doctor.