It is already well understood___________ causes the global warming.
#70555
A
what
B
when
C
how
D
that
推荐题目
______ we think of Ben, we have to admit that he is a highly competent man.
#67716
A
However
B
Whether
C
Whichever
D
Whatever
The clever boy made a hole in the wall, _____ he could see _____ was going on inside the house.
#69155
A
which;what
B
throughwhich;what
C
throughthat;what
D
what;that
See the flags on top of the building? That was _______ we did this morning.
#73048
A
when
B
which
C
where
D
what
The growing speed of a plant is influenced by a number of factors，________ are beyond our control.
#66759
A
most of them
B
most of which
C
most of what
D
most of that