1 . He is a famous singer        we are proud.

A．of which

B．of who

C．of that

D．of whom

2 . Many people, some of ______ are not overweight at all, are always going on diets or taking weight-loss pills, _____ are often dangerous.

A．who, that	B．whom, that
C．who, which	D．whom, which

3 . Portia, for ________ physics had once been very hard, turned out to be a physicist.

A．whom

B．whose

C．that

D．which

4 . They arrived at a farmhouse, in front of ________ sat a small boy.

A．whom

B．who

C．which

D．that

5 . The school has developed an online system　　　　students can choose their own teachers.

A．which

B．that

C．whom

D．where

6 . ______ is known to us all is that the old worker, ______ life was hard in the past, still works hard in his seventies.

A．As; whom	B．What; whom
C．It; whose	D．What; whose

7 . There were two boys in the lab, _______ did the experiment successfully.

A．the clever of whom	B．the cleverer of whom
C．the cleverer of them	D．the more clever of them

8 . In this factory there are 2,000 workers, two thirds of      are women.

A．them	B．which
C．who	D．whom

9 . The aged are close companions, and many of ________ have known each other for decades.

A．them

B．that

C．whom

D．what

10 . We promise      attends the party a chance to have a photo taken with the movie star.

A．who

B．whom

C．whoever

D．whomever