You can,t park here ,_________ you'll be fined .(罚款）
A. and
B. but
C. or
D. yet
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____ you practise speaking Enblish , you can not improve your English .
A. if
B. Once
C. When
D. Unless
_______ you are women , you should be as independent and brave as men .
Although
But
C. Because
D. Unless
Smile at the world ______ the world will smile back to you
A. and
B. while
C. but
D. so
Miss Li felt tired, _____ she took a nap .
A. and
B. while
C. but
D. so
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