2 . They felt ________ it was high tax and low income ________ contributed to the extreme misery of the working people at the bottom of the ladder.

A．/；that	B．that; which
C．that; what	D．/; which

3 . He wondered ________ his son was getting along with the experiment.

A．when	B．what
C．how	D．which

4 . He said nothing except ________ he will come to her birthday party.

A．that	B．what
C．whether	D．if

5 . I owe _____ my parents.

A．that I have	B．what I have
C．that I have to	D．what I have to

6 . When         Beijing Opera masks, people usually use white to highlight        is bad in human nature.

A．painted; all	B．to paint; all
C．being painted; that	D．painting; what

7 . Work on Rome’s Palatine Hill has turned up a series of discoveries, including ________ might be the underground cave.

A．what	B．which
C．the one	D．where

8 . Recently some hospitals in China have adopted ______ they call a robot-doctor, ______ will be used to operate on patients with more accuracy.

A．what; that	B．that; which
C．what; which	D．which; what

9 . The couple give ________ attend their 50th wedding anniversary some gifts to share their happiness.

A．whoever	B．whomever
C．whom	D．Who

10 . The bride and groom gave _____ attended their wedding some gifts to share their happiness.

A．whomever	B．whoever
C．whom	D．who