As many as five courses are provided，and you are free to choose suits you best.(2012·陕西)
A. whatever
B. whichever
C. whenever
D. wherever
网友回答
A. whatever
(答案→)B. whichever
C. whenever
D. wherever
解析：句意：提供了多达五门课程，你可以自由选择最适合你的一门。在一定范围内选择某一个用whichever，whichever引导宾语从句，并在从句中作主语。