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