26. (first conditional) if they (not / arrive) soon, we
(be) late.
27. (third conditional) if she (study) mandarin, she
(go) to beijing.
28. (second conditional) if we (not be) so tired, we
(go) out.
29. (first conditional) if you (buy) the present, i
(wrap) it up.
30. (first conditional) if lucy (not quit) her job soon, she
(go) crazy.

4 conditional exercise (first / second / third conditionals)

1. Was there any water in that bottle?-4. No, there wasn't
2.What is the train fare from Moscow to Vnukovo?-3. About 400 roubles.
3. Why did you do that: because of me or her?- I did itbecause of her.
4. Who can cook?- I can. 
5.you havent visited Oxford,have you?
6.they were dancing very well,wrent they?
7.Did he work yesterday?
8.By 5 oclock yesterday he hd done his homework and at six he watched a film.
9.By two oclock the boy had come home and at two he had dinner.
10.When i rang him up,he had already done his homework .
11.He will have finished this workby two oclock of this morning.
he will  visit some European countries the next fall.

1. He said that they would provide that lab
2. The manager said that they had gone to the well the week before
3. Mr.Brown asked Nastia if she would play the guitar
4. I asked how long he/she/it had stayed in Kazan
5. I said who had defended him the day before
6. Nick asked how I/he/she/it expressed that
7. The chief engineer asked who had seen the explosion on that well
8. The head hunter said not to leave the documents there
9. Peter said to inspect the situation
10. I said that they could evaluate that