问题
选择题
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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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