填空。

1. This is the professor _____ taught me chemistry in 1980.

2. The hospital ______ was built five years ago has been modemized.

3. This is the boy _____ father died three years ago.

4. The film_____ we saw the day before yesterday is very interesting.

5. Do you know the student ______was praised at the meeting?

6. 1949 is the year _____ the People's Republic of China was founded.

7. They work in a factory ______makes radio parts.

8. They work in a factory ______ radio parts are made.

9. This is the vision phone through ______  we can see and talk to our friends.

10. Here are players from Japan,some of ______ are our old friends.