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-Hi, Jane. Would you like to go to the ball this evening? -Sorry, Frank. _________tomorrow’s lessons, I have no time to go out with you.
(A) Not preparing
(B) Not having prepared
(C) Not to prepare
(D) Being not prepared
参考答案：（本答案仅供参考，请以官方发布为准。）
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[参考答案：B]
