In the survey they listed twelve kinds of food _______would affect the work of the brain．

A．which the experts believed	B．that were believed
C．the experts believed that	D．the experts believed

Here is my classmate _____ bicycle was lost yesterday.   

A．his

B．that

C．whose

D．which

Until today we have reached a stage ______ we have almost no rights at all..

A．why

B．what

C．how

D．where

He was generous with his time, ______ I was grateful..

A．for which

B．at which

C．with which

D．with which

I don’t like the way       he talks and laughs.

A．which

B．when

C．in which

D．for which

The next king of Prussia, Fretrick WilliamⅠ,        the Amber Room belonged, decided not to keep it.

A．to which

B．to whom

C．in which

D．in whom

Halloween is believed to be a day ______all the spirits come back to the world of the living, and we have the same day in China called “Guijie", the Day of Dead.

A．where

B．when

C．which

D．that

The news has spread all over the country _____ Premier Wen Jiabao will attend the Copenhagen summit next week.

A．that

B．which

C．whether

D．what

In western culture,21 was the age________ young people traditionally received a key to their parents’ door, as a symbol of entering adulthood.

A．in which

B．on which

C．at which

D．to which

If nature does not provide man with the necessary material, it is the laboratory ____ he will turn to for it．       

A．where

B．that

C．which

D．what