题目内容：

根据句子意思，用括号中所给词的正确形式填空，每空填一词。

1.Don’t touch the _______ （break）glasses. It may hurt your hand.

2.More action must be taken to stop _______（pollute）.

3.We hope that more _______（China）will win honour for our country.

4.________（luck）, he got better before the important competition.