根据句意, 用括号内所给单词的适当形式填空。
小题1:Two (nine)of the students in our school suffer from stress.
小题2:All parents love their children, and my parents love _____________（they）,too.
小题3:The students looked at their teacher _____________ (hope) and were very excited.
小题4:Because of the warm weather children feel______________ (sleep) in class than before.
