根据句意，用括号里所给单词的适当形式填空。

小题1:He is friendly to his classmates, and has made many_______ (friend) here.

小题2:After two days off on weekends, we always feel very _______(relax).

小题3:—What about________ (have) a farewell (再见) party after the exam?

—Sounds great.

小题4:Rich or poor, young or old, we all have problems.  And unless we deal with them, we can ______ (easy) become unhappy.

小题5:—Excuse me. Where's Mr Wang?

—He _____ (play) football on the playground with his students.