Писала грамматику, хотелось бы знать правильные ответы!

1) Something went wrong with our computer. Customers were ringing up all morning complaining. The mechanic is in the office and is working on it. I hope he will find out what is wrong.2) The society which they set out to create was based on mutual trust.3) Both ordinary and white chocolate are made from cocoa butter. There are very few people who like neither of them. I have no particular preference: I eat either. 4) Nobody knows where the jewels have gone. They might be stolen.5) The evacuation of the building took only 10 min.6) All of us were lucky. We would have crashed if Jack had not seen the rock in time.7) What was the journey like? — It was nice! 8) The miners dug deep to find coat.9) The first draft resolution was not discussed yesterday, it had been withdrawn long before the beginning of the meeting.10) Do you know where he was born? 11) Get your children to feel responsible for their studies.12) Her salary's decreased by two hundred dollars this year.