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
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Nowadays, many young people have no idea how to get to_____they want to go.
#34259
A
which
B
Where
C
the place which
D
there
Half an hour later, Lucy still couldn’t get a taxi _______ the bus had dropped her.
#29997
A
until
B
when
C
although
D
where
she was out of the room, he took a quick look at the papers on her desk.
#30733
A
If
B
While
C
Though
D
Unless