I don't know if she to the meeting.If she _,what

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I don't know if she ______to the meeting.If she _______,what will she do?
A.comes,will
B.is coming,comes
C.will come,is
D.would come,would

答案是B
解析：本题考的是if的两种用法
1.表“是否”,与whethe类似,但if不能与or not或or+clause连用而
whethe可以
2.表“如果”,对未来可能发生的猜想,从句用一般现在时,主句用将
来时.
据上述两点,第一空为is coming“她是否会来开会”；第二空为comes
“如果她会来开会”.
(注：clause n.从句)

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