16. I have been playing
17. I will have been working
18. will have delivered
19. have been practicing
20.had done
1. had been learning
2 . is repairing/has been doing
3. will have been reading
4. have you been sitting/have you been writing/have been waiting
5.works/will have been working
6. has been walking /hasn`t come
7. have been saving/ will have had
8. have you known/ have known
9. had been experimenting
10. is snowing/has been snowing
11.studies/will have been studying
12. were you doing/was preparing/had been preparing
was .a.. tall, strong man. 2.
Several rivers run into .the.. sea at... New York. .the.. most important is ...
Hudson River which empties into the... Atlantic Ocean. Besides ... Hudson there
are ... two other rivers: ..the. East River and ..a. Harlem River. 3. Granny often tells us ... long stories.
Today her story was still... longer. It was .the.. longest story. She began
telling it after ... dinner and finished only before ..the. supper. But ..the. story
was very interesting. I think it was .the.. most interesting of Granny's stories.
4. Which was ... most difficult exercise in ... test-paper? 5. Winter is ..a. good time for sports. 6. On ...
Sunday my friend and I usually go to .the.. country. We ski, skate, play ...
snowballs and have ..a. very good time. 7. .The.. fog is so dense that it is
difficult to walk. 8. My friend is ..a. very good chess-player. 9. In ... summer
we lived in .a.. country and went up to ..the. town by .a.. train. 10. Tomorrow is
... Sunday. If it is too hot in ..a. town, we shall go to .the.. country. And
on ... Monday we shall come back.