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

3 . The course normally attracts 50 students a term, ________ up to half are from overseas.

A．to which

B．of which

C．to whom

D．of whom

4 . Later, the medicine was tested on malaria patients, most of _______ recovered.

A．which

B．whom

C．them

D．that

5 . He has two sons,         work as chemists.

A．both of which	B．both of whom
C．both of who	D．both of them

6 . I was told that there were about 50 foreign students         Chinese in the school, most        were from Germany.

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

7 . There are 2,000 workers in our factory, two thirds of ________ are women.

A．which

B．whom

C．them

D．who

8 . Her sister, ________ you met at my home, was a teacher of English.

A．whom

B．that

C．which.

D．what

9 . The young generation, most _________ were well-educated, volunteered to teach in poor areas.

A．of them

B．of whom

C．who

D．of which

10 . The boy saved his classmates in the Wenchuan earthquake, ________ we admired a lot.

A．who

B．whom

C．which

D．that