1) I (enjoyed) the film even though I (had seen) it before.
2) I got up late that morning so when I (arrived) at the station, the train (had already left).
3) I couldn't speak to them because when I (phoned, they (had gone) out already.
4) We realised that we (had met) before as soon we (saw) each other.
5) They (had lived) in their house for twenty years when they (decided) to sell it.
6) My sister (bought) me a novel but I (had already read) it.
7) As soon as I heard his voice, i (knew) we (had met) before.
8) When I (opened) the door, the lesson (had already begun).
9) She (had painted) the wall before the children (came) home.
10) The pupils (hadn't finished) the test when the bell (rang).
11) I (met) Ann a week ago. She (had just returned) from a business trip.
12) As soon as I (heard) a cry, I (ran) out of the room.
13) I (tried) to phone John in the morning, but he (had already left).
14) The children (hadn't cleaned) the room before their parents (came) home.
15) I (finished) writing the project at 6 o'clock yesterday.
16) I (had written) the composition by 6 o'clock yesterday.
17) The teacher (understood) that the pupils (hadn't done) their homework.
18) When my brother (returned) home, we (went) for a walk together.
19) He (told) me that he (had never played) football before.
20) She (had been) a nurse before she (became) a doctor.
