—Excuseme,couldyouhelpmetaketh

—Excuse me, could you help me take this chair to my office?
—I’m sorry, ______ I can’t help you right now. I’m too busy.

A．and

B．but

C．so

D．because

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A．hasn’t invited	B．didn’t invite
C．isn’t invited	D．wasn’t invited

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A．leaving	B．left
C．to leave	D．leaves

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A．of; is	B．of; are
C．不填; are	D．不填; is

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A．was used to be	B．was used to being
C．used to be	D．used to being

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The boy is often made pictures for hours by his mother.

A．to draw	B．to drawing
C．draw	D．drew

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