__ was once regarded as impossible has come true.
#73630
A
Who
B
Which
C
That
D
What
推荐题目
She will call you if she ____. 
#41235
A
goes to
B
went back
C
is coming back
D
comes back
English is a language shared by several diverse cultures, _________ uses it differently.
#66616
A
all of which
B
each of which
C
all of them
D
each of them
We will go climbing _______ it ________ tomorrow.
#41292
A
if, rains
B
if, will rain
C
unless, rains
D
unless, will rain