Exercise 2
Are the following sentences correct?
1. I know Tom for twenty years.
2. The committee is going to announce the results after lunch.
3. It's been a long time since I last saw you.
4. They broke into the house while I was working in my office!
5. What will you tell her if she will come back after midnight?
6. Did you send the letter yet?
7. If I will have more time next week, I will visit my grandmother.
8. You won't get the goods unless you don't pay $50 000.
9. Did you ever fly by a hovercraft?
10. The accident was happening while they were coming home.