1. 다음 글을 읽고, 빈칸에 가장 적절한 것을 고르시오.
To 'conserve' means to use something carefully. It means to save and not to waste. There's an old saying: "Waste not, want not." That means, if we're careful not to waste what nature gives us, then we will have enough of necessary things. But if we waste what nature gives us, then someday we may not have enough of something ─ like trees or fresh water ─ and therefore may be unable to find ( ).
① what it is ② what we need ③ who we are
④ which way to go ⑤ how to save money |