问题描述：
34
-Why is it _____ he works so hard,only to maintain his living barely?
-A.-when
-B.- as
-C.-that
-D.-which
-Why is it _____ he works so hard,only to maintain his living barely?
-A.-when
-B.- as
-C.-that
-D.-which
问题解答：
我来补答展开全文阅读