when you want to go into the room，you should _________the door．[ ]A．knock on

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when you want to go into the room，you should _________the door．[     ]
A．knock on
B．knocking on
C．knocks at
D．to knock at

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举一反三

_____ is my brother" s hobby.             [     ]
A. Playing badminton
B. Doing his homework
C. Being a doctor
D. Living in a wooden (木制的) house

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Here are your clothes. ______, please. [ ]
A. Put on it
B. Put on them
C. Put it on
D. Put them on

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The boy _____ his father very much.     [     ]
A. look like
B. looks like
C. is likes
D. is liking

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At the birthday party, the children _____ in beautiful costumes.     [     ]
A. wore
B. put on
C. dressed
D. dressed up

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Let"s _____ each other. [     ]
A. to make friends
B. make friends to
C. make friends with
D. to make friends with

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