I'm afraid he's more of a talker than a doer，which is ________ he never finishes anything.(2011·山东)

A．that  B．when  C．where  D．why

I'd like to start my own business—that's ________ I'd do if I had the money.(2011·江西)

A．why  B．when  C．which  D．what

(2012·四川)Scientists study ________ human brains work to make computers.

A．when  B．how  C．that  D．whether

(2012·福建)We promise ________ attends the party a chance to have a photo taken with the movie star.

A．who  B．whom  C．whoever  D．whomever

(2012·辽宁)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

His writing is so confusing that it's difficult to make out ________ it is he is trying to express.(2011·安徽)

A．that  B．how  C．who  D．what

The shocking news made me realize ________ terrible problems we would face.(2011·北京)

A．what  B．how  C．that  D．why

As many as five courses are provided，and you are free to choose ________ suits you best.(2012·陕西)

A．whatever  B．whichever  C．whenever  D．wherever

________ wants to stay in a hotel has to pay their own way.

A．Anyone  B．The one  C．Whoever  D．Who

It was never clear ________ the man hadn't reported the accident sooner.(2011·江苏)

A．that  B．how  C．when  D．why