Exercise 73. Раскройте скобки, употребляя глаголы
В Past Perfect. Объясните, почему необходимо
употребить именно эту форму.
1. I opened the door after the bell (ring). 2. They (not add) sugar into
the cake and it wasn't sweet. 3. When I saw Andy, I didn't recognize
him. He (change) a lot. 4. The film (start) before you came. 5. Ann
(not finish) to write her letter before the postman came. 6. The Nilsons
(buy) a new car before the prices were put up. 7. The baby (fall) asleep by 5 o'clock​

Open the brackets. use the english tenses. l.i am watching tv at the moment. 2. we travel to the south very often. 3. olga will  do) her hw at 7 tomorrow. 4. the browns was sleeping at 3 yesterday. 5. his grandparents are having a rest now. 6. i swam) for half an hour yesterday. 7. everyone in our group often gets good marks. 8. i have been writing a report for 2 hours already.               for  9. you (to cook) dinner since 4 o'clock tomorrow. 10 we had  come) home before she called yesterday 11. we went  to london two days ago. 12. she was  washing) dishes when he came. 13. i have studied  new words today. 14. steve had  finished his work by 4 last monday. 15 nick saw her last week. 16. they have returned) just home. 17. we will buy a flat in a month. 18. she is cooking) a cake. don't bother her. 19. i will clean) my room by 6 tomorrow. 20. you have been  living) here since 1998.