问题描述：
用life还是lives
They don't know that wasting time means wasting part of their own ____ .
答案给的是life,为什么不填lives呢?
They don't know that wasting time means wasting part of their own ____ .
答案给的是life,为什么不填lives呢?
问题解答：
我来补答展开全文阅读