Răspuns:
1 They (had been driving) for two hours before they finally reached their destination. 2 Emily (had written) five letters by lunchtime.
3 The doctor told John to stay in bed until he (had fully recovered).
4 He (had been ironing) all morning when his wife arrived.
5 Peter (had already learned/learnt) to read and write before he started school.
6 The baby (had been crying) for half an hour before it finally fell asleep
7 The children (had been waiting) for an hour when the school bus arrived.
8 The burglar (had got away) by the time the police arrived.
9 She (had been digging) in the garden for three hours when she stopped for a break.
10 By the time he was eighteen he (had become) a professional athlete.
11 How long (had they been dancing) in competitions when they retired?
