Chia các động từ sau ở thì Quá khứ đơn, Quá khứ tiếp diễn và Quá khứ hoàn thành

1.    When the police (arrive) _____________, the car (go) _____________.

2.    While we (do) ____________ a sight-seeing tour, our friends (lie) ___________ on the beach.

3.    They (eat) _____________ everything by the time they (arrive) _____________ at the party.

4.    While Tom (play) _____________ the piano, his mother (do) _____________ the washing-up.

5.    I (go) _____________ after they (finish) _____________ their work.

6.    The light went out while I (have) _____________ dinner.          

7.    He (do) _____________ nothing before he (see) _____________ me.

8.    When they (get) _____________ the station, the train (leave) _____________.

9.    The house (catch) _____________ fire while they were sleeping.

10.  While Tom was reading, Amely (watch) _____________ a documentary on TV.

11.  The burglar (open) _____________ the safe when he (hear) _____________ footsteps. He immediately (put) _____________ out his torch and (crawl) _____________ under the bed.

12.  Last night I (drop) _____________ a plate when I (do) _____________ the washing-up. Fortunately it (not/break) _____________.

13.  Mary and I (dance) _____________ the house when the telephone rang.

14.  I (open) _____________ the letter when the wind (blow) _____________ it out of my hand.

15.  The boy fell and hurt himself while he (ride) _____________ a bicycle.