1 . I really don’t know why his latter discovery, _________ greater importance to science, is not so well-known to the world.

A．which I think is of	B．which I think it is of
C．of which I think it is	D．I think which is of

2 . President Xi Jinping and his recent visit to UK, _______ was considered a big success may help increase people’s interest in traveling there.

A．who

B．that

C．which

D．where

3 . It is said that a most popular emoji (expression of emotion on the Internet) is the “face with the rolling eyes”, ________ is used in 14 percent of text messages.

A．that

B．what

C．which

D．whose

4 . By serving others, a person focuses on someone other than himself or herself, ________ can be very eye-opening and rewarding.

A．who	B．which
C．what	D．that

5 . 【2018·北京】She and her family bicycle to work, _________ helps them keep fit.

A．which	B．who
C．as	D．that

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

A．which price	B．the price of which
C．its price	D．the price of whose

7 . This year’s children’s party, ________ some parents were invited to, was a great success.

A．which

B．why

C．whose

D．where

8 . His movie won several awards at the film festival, ________ was beyond his wildest dream.

A．which

B．that

C．where

D．it

9 . （2016·浙江）Scientists have advanced many theories about why human beings cry tears, none of ________has been proved.

A．whom	B．which
C．what	D．that

10 . It is in the very village, ________ Mary was born 35 years ago, ________ she will build her first school, ________ inspires everyone to help her.

A．where; that; which	B．that; that; that
C．that; when; which	D．where; when; that