用所给单词的适当形式填空
1. He showed ______ (interest)in English last year. And he is______ ( interest) in English now.
2. The students feel very _______ ( excite) at the______ ( excite) leavers' party.
3. A knife is _______ ( use) when you travel in the forest.
4. Sunday is the _______ ( one) day of the week.
5. We can never pay you back for your _______ ( kind) .
