11. ________ is known to everybody, Taiwan is a part of China. We must unify it.
A. It B. As
C. Which D. What
12. I shall never forget the day ________ Shen Zhou V was launched, ________ has a great effect on my life.
A. when, which B. that, which
C. which, that D. when, that
13. The bread my wife makes is much better than ________ you can buy at a store.
A. that which B. one that
C. that of which D. this of which
14. There is no such place ________ you dream of in all this world.
A. that B. what
C. which D. as
15. The people, ________ had been damaged by the flood, were given help by the Red Cross.
A. all whose homes B. all of whose homes
C. all their homes D. all of their homes
16. The humans are destroying nature day by day, ________ of course, will cause severe punishment from it sooner or later.
A. who B. when
C. on which D. which
17. Is this research center ________ you visited the modern equipment last year?
A. where B. that
C. the one that D. the one where
18. Some pictures of the river brought the days back to the old ________ they swam in it.
A. when B. that
C. who D. where
19. The man showed us so heavy a stone ________ no man can lift.
A. that B. as
C. which D. and
20. He stayed there for quite a long time, during ________ time he learned much spoken English.
A. that B. this
C. which D. same