1 . We must find out ____ Karl is coming, so we can book a room for him.

A．when	B．how
C．where	D．why

2 . (2018·天津）The gold medal will be awarded to ___________ wins the first place in the bicycle race.

A．whomever	B．wherever
C．whoever	D．whatever

3 . We choose this hotel because the price for a night here is down to $20, half of _______ it used to charge.

A．that	B．which
C．what	D．how

4 . She asked me ________ I had returned the books to the library, and I admitted that I hadn’t.

A．when	B．where
C．whether	D．what

5 . Jane moved aimlessly down the tree-lined street, not knowing ________ she was heading.

A．why	B．where
C．how	D．when

6 . Students are always interested in finding out _______ they can go with a new teacher.

A．how far	B．how long
C．how often	D．how soon

7 . （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

8 . Some people care much about their appearance and always ask if they look fine in ________   they are wearing.

A．that

B．what

C．how

D．which

9 . The newcomer went to the library the other day and searched for            he could find about Mark Twain.

A．wherever

B．however

C．whatever

D．whichever

10 . It is not always easy for the public to see ________ use a new invention can be of to human life.

A．whose

B．what

C．which

D．that