climber gets to the top first will get a $5000 prize.
A. No matter when
B. Whichever
C. No matter which
D. Whenever
网友回答
A. No matter when
(答案→)B. Whichever
C. No matter which
D. Whenever
解析：本题考查主语从句。whichever引导主语从句，并在从句中作定语，这时不能用no matter which,它只能引导状语从句。