问题补充：
As many as five courses are provided, and you are free to choose suits you best.
A. whatever
B. whichever
C. whenever
D. wherever
答案：
A. whatever
(答案→)B. whichever
C. whenever
D. wherever
解析：考查宾语从句的连接词。本题中的whichever suits you best是一个宾语从句，whichever在句中做主语。CD两项在句中只能做状语。Which是指特定范围之内的某一个，是有范围限制的。句意：提供了多达五门学科，你可以自由选择任何一个最适合你的。说明是有范围限制的，故B正确。
