1. with a strange ending, 2.with a sad ending , 3.with a happy ending teks

1) If you meet Kolya on your way home, ask him to call me.
2) I do not know if tomorrow's weather will be good, but if it is warm, we shall go into the forest.
3) I'm not sure whether he will invite me to the movies.
4) The  parents will be happy, when the son comes back from the army.
5) If you hurry, you will be there in time to catch the train.
6) Do not forget to close the window before leaving.
7) I'll call you as soon as I arrive in London.
8) Please do not touch anything until  the police arrive.
9) Everyone will be surprised if he passes his exam.
10) If I need help, I shall ask you.
11) When you again meet Nikolai, you will not recognise him.
12) Wait here until I come.
13) If you do not go to the station now, you'll be late for the train.

1) If the plane had left on time, they …would have been (be) in Minsk now. 
2) If they hadn’t walked 40 km, they …would not have been (not / be) exhausted now. 
3) What would have become of us, if I …would have come (come) to you then!' 
4) He would have been scrupulous — if he (can) had been able to… ! 
5) What will be the answer if you (add) …add 17 to 75?
6) If he …practices (practice) every day, he …will become (become) a champion. 
7) She …will help (help) us if we …ask (ask). 
8) If you …had (have) a driving license, you …would get (get) this job.
9) My dog …would (be) 20 years old today if it …were (be) alive. 
10) I … would have visited (visit) Sarah yesterday if I …had known (know) that she was ill.