1 . ______ is known to all is that the old scientist, ______ Chinese people are proud of, is still devoted to advancing the medical development.

A．As; whom

B．What; whose

C．It; whose

D．What; whom

2 . In the room are lots of people, ________ I don’t know.

A．many of them

B．many of which

C．many of whom

D．many of that

3 . There are 400 workers in the factory, most of _________ are women.

A．who

B．whom

C．them

D．whose

4 . He has many close friends, most of ________ are kind and generous.（用适当的词填空）

6 . We shouldn’t spend our money testing so many people, most of __________ are healthy.

7 . In our factory there are 2,000 workers, two thirds of _________ are women.

8 . I was told that there were about 50 foreign students________ Chinese in the school, most _______ were from Germany.

A．studied; of whom	B．study; of them
C．studying; of whom	D．studying; of them

9 . 　　　is known to us all is that the old scientist, for　　life was hard in the past, still works very hard in his eighties．

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

10 . The old man has two sons, ______ are lawyers.

A．both of them

B．both of who

C．both of whom

D．both of they