题目内容：

memorize many English words can help you improve your English
有一处错误,在哪?
the young man was often heard sing in the park
the doctors did what they could save that child
这2句呢？

优质解答

first one:Memoring many English words can help you improve your English .
second one :The young man was often heard singsing in the park .
third one :The doctors did what they could to save the child .