________ there are living creatures in the outer space as those on Earth hasn't been proved until now.
#30306
A
How
B
When
C
Where
D
Whether
推荐题目
It is well-known ______ a person, especially the old, eats too much he’ll feel uncomfortable.
#32594
A
that
B
when if
C
if
D
that when
A dozen ideas were considered _______ the chief architect decided on the design of the building.
#32775
A
before
B
whether
C
unless
D
because
It is estimated that nearly 100 million people live here, most of ______ in the west.
#34490
A
which
B
whom
C
that
D
them
The doctors have done ______ they could ______the child.
#33949
A
whatever; to save
B
everything ; save
C
all what; to save
D
all which; save