1 . 我突然想到这是一个富有挑战性的比赛。（strike）（汉译英）

2 . __in the regulations is that you should not tell other people the password of your e-mail account.

A．What is required

B．What requires

C．It is required

D．It requires

3 . _____ is known to us all is that the 2008 Olympic Games will take place in Beijing.

A．It

B．What

C．As

D．Which

4 . ______ seemed surprising to us was ______     he came out first in the speaking competition.

A．It; that

B．What; what

C．It ; what

D．What; that

5 . --Mum, I don’t think I am qualified enough to do this.
--Honey, be confident! You should know it is ____ a man thinks of himself ___ really determines his fate.

A．that; that

B．how; that

C．what; that

D．how; how

6 . At the evening party the host said ________ was able to solve the riddle could get a nice present as a reward.

A．whoever

B．who

C．no matter who

D．whomever

7 . ____ the flight to Beijing will be delayed is ____ I’m especially worried about.

A．If; what

B．Whether; that

C．When; that

D．Whether; what

8 . _________surprises us most is that she doesn’t even know _________the difference between the two lies.

A．What; where

B．All; which

C．What; that

D．That; where

9 . ____ we can't get seems better than ____ we have.

A．What, what	B．What, that
C．That, that	D．That, what

10 . ______ some teenagers don’t realize is ________ difficult life can be after they get addicted to drugs.

A．What; how

B．That; how

C．That; what

D．What; what a