After months of voyage,Columbs arrived in ________ later proved a new continent．

A．where

B．what

C．which

D．that

Thinking that you know ________ in fact you don't is a serious mistake．

A．what

B．that

C．when

D．however

You can't shut your eyes to the fact ________ he did was right．

A．that

B．what

C．which

D．that what

They are only children of not more than twelve and don't realize ________ to organize such an exhibition．

A．when they take

B．what it takes

C．how they take

D．what takes them

— You should find ways to bring down the cost．

— Yes,I'll try to do ________ is necessary for it．

A．that

B．whatever

C．when

D．everything

An idea came to her in a flash ________ she might do the experiment in another way．

A．when

B．which

C．that

D．while

His ability has never been in doubt— the question is ________ he is prepared to work hard．

A．if

B．where

C．whether

D．that

This painting is splendid,but ________ we actually need it is a different matter．

A．that

B．what

C．whether

D．how

________ made the school proud was ________ more than half of the students had been admitted to key universities．

A．What;because

B．What;that

C．That;what

D．That;because

— Are you still thinking about yesterday's game?

— Oh,that's ________

A．what makes me feel excited

B．whatever I feel excited about

C．how I feel about it

D．when I feel excited