When astronauts return to the earth’s atmosphere, helicopters fly to________they would land, ready to collect them.
#34720
A
what
B
where
C
which
D
that
推荐题目
A curve is a line ______ no part is straight and which has no angle.
#30518
A
that
B
whose
C
in which
D
of which
________ the civil service has its obvious advantages，it doesn’t necessarily suit everyone.
#30248
A
While
B
Because
C
Since
D
When
We should be able to do the job for you quickly, ____________ you give us all the necessary information.
#32371
A
in case
B
so long as
C
if only
D
so far as