EXERCISE 5:

EXERCISE 6:

EXEECISE 7:

Tờ 1:
Exercise 4:
1. recieved
2. have lived
3. has worked
4. has done
5. did they put
6. has studied
7. have been
8. has been
9. came
10. has learned
Exercise
5:
1. didn't learned
2. have had
3. have waited
4. haven't eaten - saw
5. have written
6. went
7. played
8. Have you ever been
9. was - didn't
10. visited
Exercise 6:
1. have bought
2. Have you finished- have been reading
3. has eaten
4. haven't seen
5. have been sriving
6. has lost
7. has written
8. has been wrting
9. has found
10. has spent

Tờ 2:
Exercise 7:
1. was going
2. was attending
3. was standing
4. was riding
5. were living
6. was walking
7. went
8. was studying - was having
9. were sitting
10. called - wasn't - was stuyding
Exercise 8:
1. didn't hear - was sleeping
2. was - were going
3. were talking - walked
4. went - weren't - were playing
5. felt - was reading
6. enjoyed - snowed - was shinging
7. shoveled - was making
8. had- was drivng - hit
9. decided - was starving
10. were waiting - arrived
Exercise 9:
1. had finished
2. have been waiting
3. had worked - worked
4. had seen
5. climbed - sailed - went
6. had climed - had sailed - had went - experienced
7. had never been
8. had already eaten
9. had tried - has just finished - hasn't decided
10. have you runned

Tờ 3:
Exercise 10:
1. had finished
2. had lived
3. had worked
4. had left
5. had been studying
6. had been watching
7. had slept
8. had gone
9. had been looking for
10. had been returned
11. Had she bought
12. had waited
13. had been writing
14. Had you been doing
15. had been living
Exercise 11:
1. will be watching
2. get - will wait
3. wake - will shine
4. get - are dancing - is making - are discuss
5. will wait - am - will stand
6. need - will stay- will call - will be
7. will you come
8. will walk
9. will study
10. will go