动名词: changingadj. 变化的，发展的v. 改变；使不同；转换，变更；交换；兑换（货币）；换衣服，更（衣）；将……换成零钱；退换，掉换；换乘，转乘（change 的现在分词）That back tyre needs changing.那个后轮胎需要更换。

I would oppose changing the law.我将反对改变这个法规。I can't see her changing her mind.我无法想象她会改变主意。Malcolm was continually changing his mind.马尔科姆频频改变其主意。Our fax number is changing as from May 12.我们的传真号码自5月12日起更改。

change 的动名词是去掉e加ing,changing

正确答案是去e再加ing