书面表达。

       给你的朋友写一封E-mail ,介绍你怎样学好数学的,向他们介绍你的一些学习方法.

要求字迹工整清楚,语言表达得体,字数不少于60 字.

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My uncle now teaches French in a famous domestic university, who _______ in Paris for 6 years.

A．have lived

B．lived

C．was living

D．had lived