词汇练习是英语学习基本功训练，单词的识记，拼写和运用是各级各类英语考试的重要内容，一定要狠抓不放松。此套练习将单词拼写练习融入情景当中，做到了词不离句。而且在单词拼写中又考察了词义，词性，词型变化等语法内容。实在是一举多得。
( 1 ) 重要，重要的
1. Anybody can see the _________ of good health.
2. It is __________ to see that the brakes on your bicycle work properly.
3. More __________, the teacher should make the total meaning of the dialogue
clear to the students before having them repeat it.