四、写作（共三节，满分45分）
第一节 单词拼写：根据汉语提示完成单词拼写，使句子意义完整。
76. Have you ____ (领会) the main idea of this passage?
77. Nowadays the governments are fighting ____ ___(战役) against the world-wide economic problems.
78. It is impossible for a student to __ __(掌握) a foreign language in such a short time.
79. Here is only one bedroom, so we’ll have to ___ ___(同住/分享).
