The Past Perfect (B) – answers
1 He never knew who found his passport or he never knew who had found his passport.
2 Neither of us managed to find the bill the Gas Board had sent.
3 Kate thought it was amusing that Richard had put petrol into a diesel car!
4 She missed her train and had had to pay for another ticket.
5 They both smiled at me as if we had met before.
6 Until then he had never known who found / had found his passport (= but then he discovered who did).
7 Yunis enjoyed his holiday, but it had been tiring speaking English all the time.or
7 Yunis had enjoyed his holiday, but it had been tiring speaking English all of the time.
8 It was a college I had never heard of.