题目内容：

根据提示用恰当单词将句子补充完整，每空一词。

1.The sound of an a_____________ car frightened the cat into running away in the darkness.

2.The boy felt e______________ when he was told that he had made a stupid mistake.

3.Advanced technology in modern society really makes people’s lives more c________than ever.

4.I wasn’t a__________ that you were behind me; otherwise, I wouldn’t have got shocked.

5.C______________differences shouldn’t be ignored when you live in another country.