1. Yesterday they felt tired and went to bed very early.
2. Where he spent his holidays?
3. Has she ever spent her holidays in the Crimea?
4. While travelling in the Crimea, she met your friend.
5. I have never visited that place.
6. You visited that place last year.
7. They just have got a letter from their uncle.
8. Have you taken any photographs while travelling in the south?
9. I and my friend were in the USA five years ago.
10. Were you in the Caucasus last year?
11. They left German when they were young.
12. My brother hasn't come back yet.
13. Yave you already finished?
14. When she saw them last?
15. We haven't seen our relatives for ages.
16. His health has improved greatly since I saw him last.
17. Hsve you passed your driving test yet? - Yes, I passed it in May, but I haven't bought a car yet.
18. We have already moved. We found a nice flat before Christmas and we have been there for two years.
Объяснение:
1. 1) If it rains, we won’t go to the park.
2) You won’t pass the exam, if you work hard.
3) When we shall be ready, I will call you.
4) You will pay back, as son as you find a new job.
5) I will see you when you are in Moscow next time.
6) What will you do, when you find out the truth?
2. 1.If you had been free I would have come to see you.
2.If I had seen her I would have been very happy.
3.If you had been busy I would have left you alone.
4.If I had lived in Moscow I would have visited the Tretyakov Gallery every year.
5.If she had known English she would have tried to enter the university.
6.If mother had bought the cake we would have had a very nice tea party.
1)b
2)c
3)a
4)c
5)b