Pete gets up at seven. Я так понимаю, что тут нужно ставить такой же предлог, как и в выражениях наподобии "at 7 o`clock".
27. 1 was blowing, was snowing
2. were eating and drinking
3. didn't take
4. was waiting
5. was refusing but watching
6. had
7. were preparing
8. went
9. was raining
10. got, rang
11. were walking
12. felt
13. became
14. was
15. opened, came
28. 1. returnes, will be able, 2. would 3. would 4. will 5. will be held 6. arrives 7. will tell you 8. would 9. recovered, should 10. am
9. 2. would come 3. would return 4. would say 5. would join 6. would do 7. would fly 8. would discover 9. would accompany 10. would sell
10. 2. will 3. would 4. will 5. would 6. would 7. will
We spend our holidays in the country-Present Simple
We spent our holidays in the country-Past Simple
P.S. Ваши предложения неверные .
1 we have already been
2she hasn’t woken up yet
3 peter has just seen
4 Has he never become?
5 have they ever been
6 they haven’t ......... in the square yet