1 . At first, Xie Lei had no idea what she should say, but what surprised her was ________ she found herself ________ up in class after just a few weeks.
刚开始的时候，谢蕾不知道该说些什么。但令她惊喜的是，仅仅几周时间，她就能在课堂上大胆发言了。

3 . 我想不明白的是为什么他老是上课迟到。
____________ I can’t understand is _________ he is always ______________ class.

4 . 我想要知道的是谁解决了这个问题。
__________ I want to know is ______________________________________.

5 . 这项任务不容易的原因是团队资源有限。
The reason ________ this was difficult ________ ________ the team had limited resources.

6 . 仿佛世界末日即将来临。
It seemed ________ the world ________.

7 . 水对于生命的发展会起关键作用,这一点在当时并不明显
It was not _____ obvious _____ water was to be _____ to the development of life

8 . 整个国度到处是盛开的鲜花，看上去就像是覆盖了一层粉色的雪。
The country, covered with cherry tree flowers, look _____ _____ it is covered with pink snow.

9 . 仿佛到了世界末日。
It seemed   _________ ________ the world was at an end.

10 . I travel to work on “the tube”. ______________(这就是人们通常所称的伦敦地铁)（根据中文提示完成句子）