1 . About half of us can taste bitter and sweet, so we are not especially sensitive to bitter food. Another 25% are called “non-tasters”, to ________ bitter food might actually be a bit sweeter.

A．which

B．who

C．whose

D．whom

2 . 请从方框内的选项中选出填入下列各句空格的最佳选项，选项可以重复使用。

A. that       B. where       C. when       D. how       E. what       F. why       G. who

1. I asked her ______ she smiled at me that day.
2. I don’t know ______ she has done to her family.
3. Besides, ______ farmers were working, they were keeping fit at the same time.
4. I want to give the white rose to my teacher, ______ has taught me that there is no success without effort.
5. The reason why English is spoken everywhere is ______ in the nineteenth century, English became the language of world trade.

3 . The problem is ________ the headmaster will send to deal with it.

A．that

B．what

C．whether

D．who

4 . _____will give her advice puzzles her.

A．That

B．What

C．Who

D．Whether

5 . I’m one of the boys, ________ never late for school.

A．that is

B．who are

C．who am

D．who is

6 . 问题是谁才真正适合做这份艰苦的工作。(汉译英)