1 . 玛丽对我指出她作文中的错误心存感激。（be thankful to sb. for sth.）
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2 . 政府官员指出，只有减少“碳足迹”，我们才能为环保尽一份力。（倒装句）

3 . The stranger calling himself a friend of my father's________to be a cheat. I was almost taken in by his trick.

A．turned out

B．looked out

C．pointed out

D．came out