He has made another wonderful discovery,___ of great importance to science.
#73562
A
who I think it
B
which I think it is
C
that I think is
D
which I think is
推荐题目
is known to us all is the old scientist, for whom life was hard in the past, still works very hard in his eighties.
#70211
A
What; what
B
What; that
C
That; what
D
As; that
The company has a free long-distance telephone number_____ customers may call with any questions they have about the products .
#70287
A
when
B
so that
C
while
D
as