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There are so many kinds of MP3 in the shop. We can’t decide  ______.
#49042
A
what to buy
B
to buy what
C
which to buy
D
to buy which
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They are both very nice.I don’t know ___
#50154
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what to choose
B
to choose what
C
which one to choose
D
to choose which one
 I study math by ____ lots of exercises.
#49928
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did
B
doing
C
do
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does
What’s the best way        a  foreign language ?
#49559
A
learn
B
learning
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to learn
D
learns
Tom’s mother told him _______ eating too much meat.
#48504
A
stopping
B
to stop
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stops
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stopped
They enjoy _____ piano in their free time.
#49914
A
play
B
playing
C
playing the
D
to play a