As many as five courses are provided, and you are free to choose suits you best.A. whoeve

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A. whoever
(答案→)B. whichever
C. whenever
D. wherever
解析：名词性从句引导词的选择。从句中中缺主语，使用连接代词，故选择B。A答案 Whoever指人，whenever 和 Wherever为连接副词。故排除。句意：有五门课程供选择，无论哪门课程 你可以随便选择最适合你的