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).