81.  It's so useful for me and all the students.I want to ask two questions.

82.  so you have killed my son!" the Prince said angrily.

83.  So, the southern part should grow rice, and the northern should grow wheat, China have many production , for example, teas , China , coal, oil, pears, and so on .

84.  Befor long, Li Qi wanted to emperor of Tang period so he was beaten, however ,Du Qiu niang was arrived in ching'an and came into Hong'gong.

85.  So I like it very much.

86.  Also, neither so young nor so old .

87.  Short and tall, also either so short or so tall, thin and fat; also neither so thin nor so fat .

88.  So we are very lucky, we can speak both of them, though some of s speak English not very well .

89.  so we must learn English hard, if we have some diffecince we can't afraid it .

90.  I'm so glad that I can study at this time.