70.
Jimmy has great trouble ____ ____(保持)with the rest of the students.
第三节：短文改错(共10小题；每小题1. 5分，满分15分)
此题要求改正所给短文中的错误。对标有题号的每一行作出判断：如无错误，在该行右边的横线上画一个勾(√)；如有错误(每行只有一个错误)，则按下列情况改正：
此行多一词：把多余的词用斜线(\)划掉， 在该行右边写上该词，并也用斜线划掉。
此行缺一词：在缺词处加一个漏字符号(∧)，在该行右边横线上写出该加的词。
此行错一词：在错的词下面画一横线，在该行后边写出改正后的词。
My cousin
and I usually stay out late with some
friends on
Saturday evenings, left Grandpa alone at home. 71. ___
It was so
cold yesterday, however, that none of us wanted 72. ____
to suffer
from the frozen wind outside. So after dinner we 73. ____
stay at home
sitting around a fire and listening to Grandpa 74. ____
tell his
experiences in Second World War. In fact they 75. ____
sounded
familiar to us, so we were still listening attentively 76. ____
so as to
make him be happy. Now and then we
asked Grandpa 77. ____
some
questions, that he answered in a humorous way. We 78. ____
burst out
laughing from time to time and he laughed too. 79. ____
Full of joy,
we all felt especially warm in the cold evening. 80. ____
第四节：书面表达(满分30分)
假设你是李华，就读于北京101中学。你的外国朋友John向你写信询问北京2008年奥运会的准备情况，请根据下列提示写封回信。
北京2008年奥运会主题：绿色奥运、科技奥运、人文奥运
要求：1. 可适当增加细节使行文连贯。