问题
选择题
---I’ll ask the teacher about past tense. I’m very puzzled about it.
--- That is just _____ most of our classmates have doubt.
A．what
B．why
C．where
D．how
答案
答案：C
本题考查名词性从句。句中where引导表语从句，在从句中作地点状语。句意：——我将问老师关于过去时态，我对此很不解。——那就是我们班级大部分同学所疑惑的地方。