1 . ________is most important is believing you are the best in the competition.

A．As

B．Where

C．What

D．Which

2 . ________ is never ________ with the progress he has made will be a success.

A．Whoever; content	B．Who; identified
C．Whoever; identified	D．Who; content

3 . _________ your father wants to know is _________ getting on with your studies.

A．What; how are you	B．That; how you are
C．How; that you are	D．What; how you are

4 . _____will give her advice puzzles her.

A．That

B．What

C．Who

D．Whether

5 . _____worries Mary a lot is that she puts on too much weight.

A．What

B．That

C．Whether

D．Which

6 . _____ bothered me most was ________ I should choose as my partner in the competition.

A．What; that

B．Which; that

C．It; who

D．What; who

7 .         the people in the Middle Ages knew of the universe was twisted by the Church.

A．What little

B．What a little

C．Little

D．A little

8 . In our discussion of instincts, we saw that there was reason to believe ________ we inherit must be of some very simple sort rather than any complicated or very definite kind of behavior.

A．how

B．when

C．whatever

D．since

9 . ________ scientists face now is how COVID-19 could be overcome.

A．What

B．Why

C．Whether

D．That