1 . Wind power is an ancient source of energy ________ we may return in the near future.

A．on which

B．from which

C．by which

D．to which

2 . The researchers who study jokes want to find out _______ people from different nations and cultures find funny.

A．why	B．that
C．what	D．whether

3 . _____ you may have, you should gather your courage to face the challenge.

A．However a serious problem	B．What a serious problem
C．However serious a problem	D．What serious a problem

4 . When changing lanes, a driver should use his turning signal to let other drivers know ______.

A．he is entering which lane	B．which lane he is entering
C．is he entering which lane	D．which lane is he entering

5 . I had great difficulty      the suitable food on the menu in that restaurant.

A．find

B．found

C．to find

D．finding

6 . One reason for her preference for city life is ___________ she can have easy access to places like shops and restaurants.

A．that

B．how

C．what

D．why

7 . ___________ the city center, we saw a stone statue of about 10 meters in height.

A．Approaching

B．Approached

C．To approach

D．To be approached

8 . We haven’t discussed yet ________ we are going to place our new furniture

A．that

B．which

C．what

D．where

9 . The course about Chinese food attracts over 100 students per year, ________up to half are from overseas.

A．in which	B．for whom
C．with which	D．of whom

10 . What he said just now had little to do with the question _____ discussion.

A．on

B．in

C．under

D．at