用括号内所给词的适当形式完成句子，使句子意思完整，语法正确。
1. These flowers are_________(especial) for our English teachers.
2. The students are_________(confuse) about the_________(confuse) problem.
3. It is sometimes_________(easy) to read books than to do math problems.
4. Our tour guide_________(lead) us to an old temple.
5. The store next to my house is having________(sell).
