They didn't often help each other when they were at school.
Did they help each other when they were at school?
They often helped each other when they were at school.把这句话改成否定句和疑问句.
They often helped each other when they were at school.把这句话改成否定句和疑问句.
急
急
英语人气:645 ℃时间:2020-05-08 11:00:41
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