英语句子请教.谢谢
1、They expressed surprise when told about the news. when 后面“they were”被省略,这种情况在什么情况下可以出现,比如其它句型可以吗,请句几个例子,谢谢.
2、Officials say the cause was under the floor of a nearby house:old bottles containing radium powder.这个句子中,old bottles后面为什么是containing,用contain可以吗,为什么?
谢谢啦.