In order to know a foreign language thoroughly, four things are necessary. Firstly, we must understand the language when we hear ____ spoken. Secondly, we must be able to speak it ourselves correctly with ____ (confident) and without hesitation. Thirdly, we must be able to read the language, and fourthly, we must be able to write it. We must be able to make sentences that are ____ (grammatical) correct.

    There is no easy way to success ____ language learning. ____ good memory is a great help, but it is not enough only ____(memorize) rules from a grammar book. It is not much use learning by heart long lists of words and ____ meanings, studying the dictionary and so on. We must learn by using the language. ____ we are satisfied with only a few rules we have memorized, we are not really learning the language. “Learn through use” is a good piece of advice for those ____ are studying a new language. Practice is important. We must practise speaking and ____(write) the language whenever we can.

在新华网与半月谈杂志社联合开展的“中国进步我来点——十八大每日调查”活动中，“腐败”、“发展不平衡、收入差距大”、“社会保障体系不完善”等关乎社会公平的话题居于前列。人们对这些问题的高度关注直接表明（）

要点包括：

1）锻炼的重要性；

2）锻炼有利学习；

3）提出锻炼建议。

注意：1）词数100左右；

2）可适当增加细节，以使行文连贯。

3）信的开头和结尾已为你写好。

Dear Lin Tao,

    Sorry to hear that you have been sick for days and hope you are better now.

Sincerely yours,

Li Hua

—                    .