根据句子意思，用括号中所给单词的适当形式填空。

根据句子意思，用括号中所给单词的适当形式填空。
小题1:The time is too short. It’s (possible) for Daniel to finish this work.
小题2:Mother’s Day is coming. He’ll use what he has (buy ) his mother a new dress.
小题3:Take care, children. Don’t hurt (you) when you play football.
小题4:I’m surprised that Gavin is 50. I thought he was (young), for he seems to be in his thirties.
小题5:Are you satisfied with these (sing) performances in the opera?