1. You’d better not go _______ the forest. It’s dangerous.
2. Which room are you going to live ______?
3. The building is ______ fire. There are some people ______ the top floor.
4. Before 1990 there was no airline _______ the two cities.
5. It’s not good to come late _______ school.
6. What’s wrong _______ your bike?
7. Thank you very much _______ coming to see me.
8. I couldn’t finish it _______ your help.
9. Don’t laugh _______ others’ mistakes.
10. Do the twins look _______ their father?
