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题目内容
（哈尔滨电大直属学院-人文英语）
_______ tomorrow.s lessons, Frank has no time to go out with his friends.
选择一项：
A.
Not preparing
B.
Not having prepared
C.
Not to prepare
选择一项：
A.
Not preparing
B.
Not having prepared
C.
Not to prepare
参考答案
