1 . Meanwhile, as the construction goes on, more roads will be built and the Metro system will be expanded, ________ can reduce traffic jams. （用适当的词填空）

2 . The film you see on the screen is the product of a huge amount of hard work, most of________ takes place behind the scenes. （用适当的词填空）

3 . 根据句子，填入适当形式的单词。
1. The place ________ interested me most was the Children’s Palace.
2. We came to a place to _________ they had never paid a visit before.
3. The room _______ Mr. White lives is not very large.
4. ____ is known to all, English is not very difficult to learn.
5. The foreign guests, most of________ were government officials, were warmly welcomed at the airport.
6. They asked about the things and teachers ______ they still remembered in the school.
7. Will you please show me the way to the only tall building _______ stands near the post office?
8. Next winter, ____ you’ll spend in Harbin, I’m sure, will be another exciting holiday.
9. Do you work near the building ________ colour is yellow?
10. He has made a wonderful discovery,________I think is of great importance to science.