Stop smoking, ( ) you will get better soon.
A. of
B. but
C. so
D. and
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Our school library is( )the third floor.
A. on
B. in
C. at
D. over
( )her husband, she has now become a famous film star.
A. Because
B. Thanks to
C. Thanks for
D. With the help
After class, let's ( ) basketball together.
A. playing
B. play
C. plays
D. to play
If we( )take environmental problems seriously ，the earth( )worse and worse.
A. don't ;will be
B. won'; isn't
C. won't; is
D. don't; won't be
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