1 . A good advertisement, ________ people attach positive meanings to, can contribute to the sales of a product.

A．that

B．which

C．to which

D．whose

2 . Recently I bought an ancient Chinese vase, ________ was very reasonable.

A．which price

B．the price of which

C．its price

3 . Her English teacher has taught me a lot, _______she is grateful.

A．for which

B．for that

C．of which

D．at whom

4 . The factory produces half a million pairs of shoes every year, 80%_________are sold abroad.

A．of which

B．which of

C．of them

D．of that

5 . The first trial of this medicine took place in 1899, _______ the company, _______ Hoffmann worked, began distributing（分发；分配） the medicine in powder（粉末） form to physicians to use with patients.

A．when; which

B．when ; for which

C．which; in which

D．which; where

6 . More and more people are learning English,____ has drawn much attention of the public.

A．the importance	B．the important
C．the importance of which	D．the importance of it

7 . Mr Zhang has two daughters,both_____are famous doctors .

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

8 . It is reported that two schools,　　1　　are being built in my hometown,will open next year.

A．they both

B．which both

C．both of them

D．both of which