单项选择题

There is not much time left for you to cover everything, you'd better ______ unimportant points. ( )

A．leave off
B．focus on
C．leave out
D．concentrate on
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单项选择题
Weather ______, we will go on with our journey through the west. ( )
A．permits
B．permitting
C．permit
D．to permit
单项选择题
Respect for the law is the foundation of civilized living. ______ breaks it will be punished. ( )
A．Who
B．Whichever
C．Whoever
D．Whomever
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