My mother always says it's a waste of money ____such things as are not really needed when I buy some new CDs.
问题描述：
My mother always says it's a waste of money ____such things as are not really needed when I buy some new CDs.
A.buy B.to buy C.buying Dbought
答
My mother always says it's a waste of money ____such things as are not really needed when I buy some new CDs.
A.buy B.to buy C.buying Dbought
选C
固定词组 waste time doing sth只能用动名词这里是 waste of money 可以doing something吗？对的就是这种搭配