He made another wonderful discovery, ______ of great importance to science.
#72556
A
which I think is
B
which I think it is
C
which I think it
D
I think is
推荐题目
You can use a large plastics bottle, _________ cut off, as a plot to grow flowers in.
#69130
A
with its top
B
the top of which
C
whose top
D
its top is
The Science Museum , ________ we visited during a recent trip to Britain , is one of London’s tourist attraction.
#70060
A
that
B
which
C
what
D
where
