---I’ll ask the teacher about past tense. I’m very puzzled about it. --- That is

题干

---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

上一题下一题 0.15难度单项选择更新时间:2012-07-11 07:29:44

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