[例3]
Sadly, it is very difficult for pandas to live in the world. Here are some of the_______ that pandas may have in the future. If hunters catch a panda, they will kill it for its fur. If farmers cut down trees and forests, pandas will have no place to live in.
A. examples B. questions C. matters D. problems
【解析】根据下文people will kill pandas和pandas will have no place to live in可以判断，这都是说明熊猫在将来可能面临的问题。B选项questions只是表达一般的问题。D项最为恰当。
[例4]
A month later, Mary hadn't heard from Peter or received any money, __s_____ she phoned him.
【解析】根据上文Mary hadn't heard from Peter和下文she phoned him可以判断两句之间存在着因果关系。因此填so。
4.利用语法和句型解题
这类题目主要考查学生在一定的语境中运用语法知识和识别句型的能力。由于学生对这类选项把握较大，因此这类题型的数量越来越少。
[例1]
The earth is our home. We must take care of it. Life today is easier than it was________ years ago, but it has brought some new problems.
A. hundred B. hundreds of C. hundred of D. hundreds
【解析】答案为B。此句主要考查数词的用法。表示具体几百时，应是some hundred；表示成百上千时，则是hundreds of。
[例2]
Every day, standing at my information desk, I have to answer a lot of questions of the travelers coming from all ___o__ the world.
【解析】答案为over。all over the world是一个最为常见的固定搭配。
[例3]
Grandma Yang lives alone in our neighborhood. Her husband has been dead for eight years. Her only son lives and works in Britain. He asked her mother to go to Britain so that he can look ________her. But Grandma Yang won't go.
A. for B. around C. after D. care
【解析】look for意为寻找；look around意为向四周看；look after意为照顾。根据上文He asked her mother to go to Britain这一提示我们可以知道儿子为了是照顾妈妈，所以选C。