Some questions may come to you during the interview, but you can and should make good prep

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A. by design
(答案→)B. in advance
C. in person
D. by chance
解析：B 考察介词短语辨析。句义：面试时会问你一些问题，但是你可以而且也应该提前做好准备。故使用in advance提前。By design故意地；in person亲自。By chance碰巧。