Whenyouwanttogointotheroom，you

When you want to go into the room，you should________ the door．

A．knock on	B．knocking on
C．knocks on	D．to knock on

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A．almost	B．beyond
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A．beyond; in	B．out of; at
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A．another	B．the other
C．other	D．others

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A．comes on	B．comes along
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