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I don't know if she ________ tomorrow, if she ________, I'll call you.

[  ]

A.comes; comes

B.will come; will come

C.will come; comes

答案:C
解析:

(前一句,“我不知道她明天是否能来”,用将来时.在后一句“如果她来的话,我就打电话告诉你”,“if”是如果的意思,所以用现在时,符合“主将从现”的语法原则,即主句用将来时,从句用现在时.)


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