1 . These terraces also provide a perfect environment for birds and fish, ________ feed on insects that can harm the rice crops.

A．some of that

B．some of whose

C．some of whom

D．some of which

2 . I wish to thank Professor Smith. Without his help I would never have got this far.(用定语从句改写)
_____________________________________________________________________________________________

3 . 很高兴收到你的信，在信中你想了解我最喜欢的电影。(定语从句)(汉译英)

4 . Professor Smith, for ________ work matters most, is devoted to his research work.

A．whose

B．that

C．whom

D．what

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

A．of them

B．of whom

C．who

D．of which

7 . He was educated at the local high school ,_______ he went on to Peking University.

A．in which

B．after that

C．after which

D．in that

8 . With the help of curriculum reform, students enjoy a variety of after-school activities, ______ up to half are aimed at strengthening their physical strength and building up their confidence.

A．to which	B．of which
C．from which	D．in which

9 . English is a language shared by several diverse cultures, _________ uses it differently.

A．all of which

B．each of which

C．all of them

D．each of them

10 . She brought with her three friends，none of ________ I had ever met before.

A．them

B．who

C．whom

D．these