题目内容：

用所给单词的适当形式填空

1.The environment __________(pollute) is more and more serious.

2.My elder brother decided to go abroad to continue his ___________(educate).

3.Ladies and ___________(gentle), come this way, I'll show you how to operate the computer.

4.You should wear clothes ________ (suit) for the occasion.

5.She gave him a ________ (play) tap on the arm.