20. — We are going to have a singing party tonight. Would you like to join us?
---今晚我们有个歌唱聚会,你想来吗?
— _______ ---恐怕不行,因为我得参加一个重要会议。

170. It’s never too late to learn. 活到老,学到老。

169. The polluted air becomes poisonous and dangerous to health.
受污染的空气是有毒的,对健康有害。

168. Laptop computers are popular all over the world and give people easy access to the Internet.
手提电脑在全世界都十分普及,为人们提供便利上网的途径。

167. All things are difficult before they are easy. 凡事总是由难而易。/万事开头难。(二选一)

166. Beijing Olympic Games can make Chinese people work harder.
北京奥运会能让中国人努力。

165. Their parents don’t know them as well as their friends do.
他们的父母不像朋友那样了解他们。

164. Each year some of his money is given to the best scientists and writers of the world.
每年他的一部分钱都会奖给世界上最优秀的科学家和作家。

163. But I’ve got room for only two of you in the house.
但是我家里只能住下你们其中的两个人。

162. On their way they came to a shop where bread was sold.
在途中,他们来到一家销售面包的商店。

161. Success in business depends on hard work. 事业上的成功依靠努力工作。