day.be→being

2.At last the tourists managed to escape from the dangerous place，hungry and frightening.frightening→frightened

3.Keeping calmly is the most important thing when you deal with an emergency.calmly→calm

4.Before you start，it seems that the task is unlikely to being accomplished.being→be

5.Whether wildlife can be well protected is of great important.important→importance

Ⅲ.完成句子

1.It's strange that he__should__be__absent.

真奇怪，他竟会缺席。

2.When I came in，he seemed to__be__eating something.

当我进来时，他好像正在吃东西。

3.In 2015 American scientists claimed__to__have__found the evidence of water on Mars.

2015年美国科学家们声称找到了火星上有水的证据。

4.You will find this book of__great__use in learning English.

你将会发现这本书在学英语中作用很大。

5.The professor is due__to__make__a__speech this Friday.

教授预期在本周五做演讲。

Ⅳ.单元语法专练(用所给词的适当形式填空)