Answer:

1.) I'm like a nail because I may be small but when I am with other people. (nails) we can make a stong fence or house meaning, we can be a foundation of a community.

2.) A river never stops running. “A river never passes the same place twice,” says a philosopher. “Life is like a river,” says another philosopher, and we draw the conclusion that this is the metaphor that comes closest to the meaning of life.