旅顺口开发区:cover or satisfy?

来源:百度文库 编辑:杭州交通信息网 时间:2024/05/09 05:14:24
After moving into the town,my wife did some washing for the rich so that we had just enough to ____our expenses.
a.satisfy b.cover
the answer is a.but i think b is right.which one?

b.cover