________ is known to us all is that Antarctica is the coldest place on Earth.
#31155
A
It
B
As
C
What
D
That
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We made it possible the task would be finished ahead of time within three weeks.
#29955
A
what
B
that
C
which
D
how
________ good use you have made of your time to work, there is still some room for improvement.
#33762
A
Whatever
B
However
C
Though
D
Whether
________ astronauts cannot go to a baseball game or a movie in orbit , there are many familiar activities that they can still enjoy.
#31046
A
While
B
Since
C
Before
D
Unless