1 . The reason__________ their failure you know is__________ they didn't get fully prepared for the experiment．

A．why, that

B．that, why

C．for, that

D．why, because

2 . Determination is a kind of basic quality and this is ________ it takes to do jobs well.

A．what

B．that

C．which

D．why

3 . ----Many online games are full of violence, which do harm to the development of the children.
----And that’s _______ my concern lies.

A．what

B．which

C．where

D．that

4 . ____ 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

5 . You are saying that everyone should be equal, and this is _______________ I disagree.

A．why	B．where
C．what	D．how

6 . ______ 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

7 . Our attitude towards life is________makes the difference between our being happy or not.

A．that

B．whether

C．what

D．which

8 . Almost everyone has his own strengths and weaknesses. It is           others are weak that maybe you have a great advantage.

A．as

B．where

C．that

D．what

9 . ---Are you firmly against any independence move by Taiwan?
---Of course. That’s ______ our basic interest lies.

A．why

B．when

C．where

D．in which

10 . The question is ______ is responsible for what has happened.

A．what

B．where

C．who

D．whose