问题
选择题
9. It long before we the result of the experiment.
A．will not be, will know
B．is, will know
C．will not be, know
D．is, know
答案
答案：C
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9. It long before we the result of the experiment.
A．will not be, will know
B．is, will know
C．will not be, know
D．is, know
答案：C
