______ fast did John run ______ I could hardly catch him.
30. Having introduced the advanced scientific methods, the factory turned out ______ in 2006 as a year before.
29. ________that the government can lead them out of the financial crisis, people are optimistic about the future of the country.
28. I'm afraid we'll have to work extra hours for there are still some problems ________.
27. Since I don’t like many vegetables, can I eat fruits every day instead____ the nutrients I need?
26. How long do you think ________ the computer company brings out a new product?