_____ is known to all, paper was first made in China. 
#71980
A
It
B
That
C
Which
D
As
推荐题目
The river, ____ are covered with trees, is very long.
#73086
A
which banks
B
of which banks
C
whose the banks
D
the banks of which
At last, they reached _______ there was no grass and trees.
#68235
A
to the place where
B
where
C
the place which
D
in which
There were many more people who got injured in the big fire than _______.
#73294
A
was reported
B
it was reported
C
were reported
D
they were reported