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。
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。
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。
April Fools' Day is on April l. People can play ___j____ on others on this special day. If you succeed, you usually laugh and say, “April Fool!”
【解析】根据文章意思,在4月1日愚人节这天,人们经常相互开玩笑。从语法角度看,play jokes on sb。是固定词组。所以答案是jokes。
Around the world, people have different ideas about what good manners are.