Ⅰ.根据句意及首字母或汉语提示完成句子
1．The dirty water would p________ the river.
2．It's a little cold. Can you s________ the window for me?
3．The old man was very sad because he w________ too much time when he was young.
4．He is the best teacher, though he has the ________ (最少的) experience.
5．The boy is very lively.He likes ________ (跳绳) very much.
