It suddenly occurred to him ________ he had left his keys in the office.(2012·江西)

A．whether B．where C．which D．that

________ was most important to her，she told me，was her family.

A．It B．This C．What D．As

(2012·天津)It doesn't matter ________ you turn right or left at the crossing—both roads lead to the park.

A．whether B．how C．if D．when

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

A．that B．how C．when D．why

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

A．Anyone B．The one C．Whoever D．Who

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

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

A．what B．how C．that D．why

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

(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

(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