1. We can share the costs if we go /went / will go away together. 2. Unless you take / don't take / will take your medicine, you'll get worse. 3. If I were you, I call / called /would call to apologise. 4. We'll go snowboarding again tomorrow if it will snow / would snow / snows tonight. 5. If only she listened / had listened / listens to the weather forecast; she wouldn't have left. 6. I wish I had /had had/ have a car. I could travel around more easily. 7. If I were you, I stayed / would stay / had stayed at home. 8. I wish I told / had told / tell her earlier. 9. If he had invited us, we would go / would have gone / went. 10. If only they had kept / didn't keep / kept to the path. They wouldn't have got lost.

1.we did not know that the new programme had already (been broadcast)
2.I hope that our little misunderstanding (has been forgotten)
3.I am so angry because my party (has been spoilt) by Max,s rudeness
4.After the speaker (had been interupted) he stopped to collect his thoughts
5.I actually felt quite depressed after the threatening news (has been announced)
6.May I invite you to the banquet room where some food and refreshments (have been served)
7.By early June all the exams (had been passed) and we could at last enjoy our holidays
8.Jim looks so happy. Do you know that he has just (been offered) the leading role in a films?
9.How long do you think, you (have been spied) on?
10.The novel I (have been given) is just another spy story
11.The films that was on was not new: it (had been shown) many times before
12.I can imagine how unhappy and humiliated you feel because of all the cruel and unfair words that (have been thrown) into your face
13. Have all the books (been closed) , kids?
14.At the beginning we all felt rather tense as ice (had not been brokenk) yet

The main threats, the exhaust gases that every day we are releasing into the atmosphere and thus worsen our air, the trees do not have time to clean the air, and lately they are fewer in gorodah.Kazhdy person can help all people in the world if something does not go far on the machine, such as a bicycle, not zagryaznyach air, people can often be clean, because the soil does not have time to rot, many veschi.I ultimately each of us can help the planet, if you just plant and grow a tree unnecessarily. it will clear the air