36. How can you know whether you will succeed ______ you never try?

32. His composition won first prize, ______ made him too happy to sleep for nights.

30. With little knowledge about the area he succeeded ______ many researchers failed.

14. --- It’s thirty years since we last met.
--- But I still remember the story, believe it or not, ______ we got lost on a rainy night.

12. Bungee is an adventurous sport, popular with young adults, ______ courage matters more than strength.

9. Many young people in the West are expected to leave ______ could be life's most important decision --- marriage --- almost entirely up to luck.

4. We believe ______ you have been devoted to ______ naturally of great necessity.

I. 单项选择：(共50题；满分50分；每小题1分)
从A、B、C、D四个选项中，选出可以填入空白处的最佳答案，并在答题卡上将该项涂黑。
1. --- I serve three meals every day and do almost everything for him, but he still lets me down.
--- I’m afraid that’s ______ you are mistaken.
A.how                  B. where               C. what                D. in which

34．It took the early settlers more than 150 years to build up ___________is now a modern city．

31．______weather it is, we shall set out at 8o'clock．