问题详情：
单词拼写 根据句意，用括号内所给单词的适当形式填空。
1. Usually, driving a car to work takes_______(little)time than taking a bus.
2. The answer to the question is________(correct), please think it over and try again.
3. Not all the books are_______(use)to teenagers, we should learn to choose the right ones.
4. Because of making a big mistake in the match, the twins decided to say sorry to the fans _______(they) at last.
【回答】
1. less 2. incorrect 3. useful selves
知识点：构词法
题型：完成句子
