7. Please leave us alone, we have something _______ to discuss.　 (person)

6. It’s _______ for him to pass the test, for he has missed too many lessons. (usual)

5. The computer is now a necessary and important t________ in many businesses.

(B)根据句意，用所给单词的适当形式填空。

4. The thief got into the room t_______ the window.

3. Modern t______ makes the world “smaller” than it used to be.

2. Many d_______ are caused by bacteria(细菌).

(A)根据句意及首字母提示完成句中所缺单词。　

1. He can’t hear what you said, he is d_______.

如今计算机已成为人们生活的重要部分，请你就计算机过去和现在的变化写一篇短文。字数不少于70。

提示：有很好的内存，记性比人好；以前的又大又重，只能做简单的事；

现在的又小又轻，运转得又快又好；电脑现在越来越流行。已经成为人们日常工作和生活的重要部分。