[答案]　development

　　Ⅱ.填空

　　1．用without effort, with effort, spare no effort, make an effort填空

　　①We should ____________ to make up for the lost time.

　　②He didn't make efforts and won the first prize ____________________.

　　③we should ____________ to study hard, which means we should study hard ____________.

　　[答案]　①spare no effort　②without effort　③make an effort；with effort

　　2．翻译下面句中while的含义

　　①While the students came from different countries, they got along quite well in the summer camp.____________

　　②Some people waste food while others haven't enough.____________

　　③While I was looking through the news online, up came a video of a lovely bear.____________

　　④While there is life, there is hope.____________

　　[答案]　①虽然；尽管　②然而　③当......时候

　　④与......同时发生

Ⅲ.单句改错

　　1．I always considered your brother to be connected to that club.____________

　　[答案]　第二个to→with

2．We have made a great progress, but there is a long way to