1. He was walking along the streets which were usually so crowded, but that afternoon for some reason they looked ________ .

2. As the path was very narrow and dangerous, the guide told them they should walk in ________ file.

3. Pregnant women do not seem to realize that smoking and drinking expose their babies to a serious health ________ .

4. The castle ________ built in the 15th century.

5. Try ________ the door really hard if you want to open it.

6. This old car has no brakes you drive it at your ________ .

7. That building ________ left unoccupied since 1950.

8. Her mind was occupied by one ________ thought and that was to leave this family forever.

9. All I can say at the moment is: Long ________ the company!

10. The children ________ taken to school by bus every day.