【题目】Landel didn't tell me the reason their team had failed to win the game.
A. why B. what
C. who D. that
在线课程【答案】A
【解析】考查定语从句。句意：Landel没有告诉我他们队在比赛中失利的原因。reason是先行词，它在定语从句中做原因状语，A. why 原因状语； B. what引导名词性从句，做主语、宾语、表语；C. who 指人做主语或宾语； D. that 引导定语从句时指人或物做主语或宾语。因此选A。