高二英语：经典题型解析(11)

　　21. Here's my card. Let's keep in ____.
　　A. touch
　　B. relation
　　C. connection
　　D. friendship
　　【解析】选A keep in touch (with)是一种固定搭配。
　　22. ____ in the regulations that you should not tell other people the password 0f your e-mail account.(2005上海)
　　A. What is required
　　B. What required
　　C. It is required
　　D. It requires
　　【解析】选C用 require 被动式，It为形式主语。