1 . The prize winner described to the class ________ he had managed to achieve excellence in his study.

A．what

B．how

C．which

D．whether

2 . Thinking _________ you know ___________ in fact you don’t is a terrible mistake.

A．that; what

B．that; that

C．what; that

D．what; what

3 .
1. This seemed a small challenge _____________(compare) with the one I had experienced.
2. Wechat makes ___________ easier for people to keep in touch with others.
3. Can you ______________(simple) the instructions in order that children can understand them?
4. She went away in a hurry, _____________(leave) the light on for the whole night.
5. People who work in offices are usually referred to _____________“white collar workers”.
6. The difficulty he had _______________(understand) her finally led to even greater problems between them.
7. It is often said that the joy of travelling is not in arriving at your destination __________ in the journey itself.
8. She is very dear to us. We have been prepared to do ___________ it takes to save her life.
9. Very often, opportunities come quietly and go by without ________________(notice).
10. _______________(finish) his homework, he listened to some music to relax himself.

4 . I'm trying to look ahead at ________ might happen in future and be ready to handle it.

A．which	B．that
C．what	D．as

5 . （2014﹒北京）Some people believe ___________ has happened before or is happening now will repeat itself in the future.

A．whatever	B．whenever
C．whereever	D．however

6 . I just don’t understand _______ that prevents so many Americans from being as happy as one might expect.

A．why it does	B．what it does
C．what it is	D．why it is