-You were not in when I came over to your house.

   -Oh, I ____________ for a friend from England at the airport.

A. was waitingB. had waitedC. am waitingD. have waited

He looked around and caught a man __________ his hand into the pocket of a passenger.

A. putB. to be puttingC. puttingD. to put

What a kind teacher. But for his help, I __________ my study.

A. wouldn’t finishB. wouldn’t have finished

C. shouldn’t have finishedD. mustn’t have finished

He seems too tired today, and I wonder _________ he got a good sleep last night.

A. whenB. thatC. ifD. where

I ____________ you not to move my dictionary—now I can’t find it.

A. askedB. askC. was askingD. had asked

Math is ___________ me. I can never get high grades.

A. overB. beyondC. belowD. behind

-The window is dirty.

   -I know. It ___________ for weeks.

A. hasn’t cleanedB. didn’t cleanC. wasn’t cleanedD. hasn’t been cleaned

My friends __________ come to see me. I don’t want to go out in case they come.

A. canB. mustC. mayD. will

You may drop in or just give me a call. _________ will do.

A. EitherB. EachC. NeitherD. All

微博（micro blog）已成为时下学生常用的交流方式。人们对此褒贬不一。请根据以下要点提示，用英语写一篇短文，描述人们对学生使用微博的符法。

学生：记录生活，交流思想。

家长：了解孩子想法.过渡关注博客.影响学习。

教育人士：开阔视野，但需要适当引导。

注意：词数100左右。

参考词汇：开阔视野broaden one’s horizon  引导guide