He doesn’t think the question of ______they are boys or girls is important .

A forest is usually found _______ heavy rainfall is frequent.

I’m stuck is used __________.
A. when you have a good idea    
B. when you go on talking without stop
B. when you are thinking something is too easy
D. when you can’t continue with something because it’s too difficult

　　　　 so much salt in the Dead Sea that people won’t get sunk.

. I’m really hungry. Let’s eat at 　　　　 restaurant has a free table.
A. whichever  B. whatever
B. which  D. what

The first prize goes to _______ makes the greatest contribution to the company.

When asked to explain ________ he does to make his students so fascinated with his lessons, the teacher paused and thought deeply.

The Internet is regarded as one of the reasons_______ many people aren’t getting enough sleep now．

To finish the work in such a short time, all of us ________ like crazy day and night.

The reason __________ he explained is not __________ I expected．