下面4句话哪里错了?
题目
下面4句话哪里错了?
1.He often hits me on my head,so I hate him.
2.What did you do when your mother called you up?
3.The temperature today is much colder than yesterday.
4.While I walked along the street,I met an old friend of mine.
答案
on my head -------- on the head
did you do -- were you doing
colder - lower
walked -- was walking
绝对正确
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