在横线上填入一个适当的词或用括号内所给单词的适当形式填空。
【小题1】I need some water __________ (drink)。
【小题2】She often tells funny stories to keep us __________ (happily).
【小题3】Joe looked __________at the sky and saw a cloud moving like a snake.
【小题4】You can use the key __________ (open) the door.
【小题5】She is very strong. She can even lift __________ a man like Tom.