12．-I prefer shutting myself in and listening to music all day on Sundays.

-That's________I don't agree.You should have a more active life.

A．where B．how C．when D．what

答案　A

解析　句意为：--周日我宁愿把自己关在屋子里整天听音乐。--那正是我不同意之处，你应该过更积极的生活。where在句中引导表语从句，充当地点状语。

13．________ leaves the room ought to turn off the light.

A．Any one B．The person

解析　whoever引导主语从句，且在从句中作主语，相当于anyone who。

14．Please call my secretary to arrange a meeting this afternoon，or________it is convenient to you.

A．whenever B．however

C．whichever D．wherever

答案　A

解析　句意为：请打电话让我的秘书安排一个会议，在今天下午或是任何你方便的时候。whenever无论何时；however无论如何；whichever无论哪一个；wherever无论何地。此处or连接的是和this afternoon并列的两个时间状语(从句)，故只有A项正确。

15．The other day，my brother drove his car down the street at ________ I thought was a dangerous speed.

A．as B．which C．what D．that

解析　考查what引导的名词性从句。介词at后面紧跟的从句是宾语从句，从句中缺少主语，而宾语从句中I thought充当插入语。

　　Personal computers and the Internet give people new choice about how to spend their time.Some may use this freedom to share less time with certain friends or family members，but new technology will also let them stay in closer touch with those they care most about.I know this from personal experience.