问题详情：
用划线单词的反义词填空。
1. Are you free(有空) or________today?
2. My ruler is________s is short.
3. Don't ask others.________it yourself.
4. The question is not________, it is very easy.
5. This pencil case is old. Please give me a________one!
【回答】
er icult
知识点：其他
题型：完成句子
