Put yourself in situations where you're forced to communicate in English, ______ you'll see more progress over time.
#31067
A
until
B
or
C
but
D
and
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Recently, employees at the Shanghai Metro’s Railway Station Stop have been busy learning dialects from other parts of the country, ___________ aims to provide better service to travelers from outside the city.
#33504
A
where
B
that
C
which
D
it
We’ve given her some advice, but I don’t know________ she’ll accept it．
#30103
A
what
B
where
C
whether
D
Which
Many teenagers say that _____ they have a lot of friends, they really have no best friend.
#32317
A
when
B
while
C
if
D
because