1. Scientists say that global warming is caused by greenhouse gases
2. Susan was shocked by Mark's appearance. She hasn't seen him for three years
3. If it is sunny tomorrow we will have a picnic
4. Don't open the presents before I get home
5. His last film was described as a masterpiece
6. Have you heard the news? The City Bank has been robbed
7. By that time I have spent a lot of money
8. I wonder if Karen will be there tomorrow
9. Jenny decided to go on a diet because she put on too much weight
10. You look nice. Will you be on holiday somewhere?
11. We tell that the candidates will be interviewed in alphabetical order
12. Several drivers were injured badly last week
13. By the time we got back Jane had gone home
14. Sorry, I can't go with you, I work on that day
15. I'm sorry the hall is in such mess. We've been decorating it since last week
16. Carol looked through the letters quickly to see if one of them was the one she had been expecting so long. And she found it. It was the answer to the application she made a few weeks earlier