He made a mistake, but then he took action to change the situation ________ it got worse. 
#47055
A
until
B
when
C
before
D
because
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If they live in Chongqing, they can go to Wuhan _____ easily.
#48620
A
on foot
B
by the taxi
C
by boat
D
by sea
Those two boys are twins, _______, they look very different.
#49303
A
except
B
but
C
however
D
because
She gave the students a lesson ____ Mr. Wang.
#50127
A
instead
B
instead of
C
instead on
D
instead in
Let’s go home________ 6:30.     
#49084
A
at
B
for
C
in
D
as