单项选择题

I don't think you've had some trouble up there, ______

A. do I
B. have you
C. don't I
D. didn't you
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We will help the researcher in whatever way may be appropriate to bring his idea to ______.
A. formulation
B. formation
C. foreground
D. fruition
单项选择题
It is obviously desirable that the school authority ______ awareness of the physical risks of sexual activity.
A. fostered
B. fosters
C. foster
D. will foster
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