Put the verb in brackets into Past Indefinite, Past Continuous, Past Perfect and Past Perfect Continuous

1. Nobody (know) where Smith (go). 2. A girl who (stand) under the beech tree (come) up to us. 3. Mary (speak) to Mr Boxwell when I (see) her in the corridor this morning. 4. John (park) the car in Fifth Avenue when a young man in black glasses (appear) from nowhere and (stand) before him. 5. He again (come) to the village where he (live) in childhood. 6. While we (talk), there (come) a loud knock at the door. 7. He (look) into the drawing-room. The old man (sleep) peacefully in the armchair at the fire-place. 8. When their visitor (leave) John and his mother (stand) near the window. 9. When he (dress), he (go) downstairs, (write) a long letter to his parents and another to his sister. 10. She (welcome) her with a bright smile and (turn) back to the offensive dandy lions she (fight) with. 11. While she (read) this notice, a middle-aged woman (appear) in the doorway. 12. When he (come) back to the conference room, he (see) that the situation (change). 13. She (sit) at the table only five minutes when a car (come). 14. Their father (be) still silent, even when they (have) coffee. 15. The three (sit) down to the meal that Susan (prepare). 16. He (sit) thinking of his wife whom he (leave) alone in Europe. 17. They (look) over the accounts together and (find) where she (make) her mistake. 18. I (be) surprised at John's failure because he (be) such a good student previously.

Keys

1. 1. had been gathering; 2. had been shivering; 3. had already been discussing; 4. had been holding.

2. 1. was leaving, had stopped; 2. was, was, had been working; 3. had been listening, wondered; had heard; 4. said, had been teaching; 5. said, had just finished, had been reading; 6. came, brought, had been expecting; 7. had been raining, were.

3. 1. got, was eating; 2. was, had been talking; 3. went, were expecting; 4. turned, was standing; 5. had been fanning, stopped; 6. was leaving, called; 7. asked, had been looking; 8. were standing; 9. didn't say, had been sleeping, had.

4. 1. knew, had gone; 2. had been standing, came up; 3. was speaking, saw; 4. had parked, appeared, stood; 5. came, had lived; 6. were talking, came; 7. looked, was sleeping; 8. had left / left, stood; 9. had dressed, went, wrote; 10. welcomed, turned, had been fighting; 11. was reading, appeared; 12. came, saw, had changed; 13. had been sitting, came; 14. was, were having; 15. sat down, had prepared; 16. sat, had left; 17. looked, found, had made; 18. was, had been.