21. This washing machine is environmentally friendlybecause it uses _____ water and electricity than _____ models.(北京)
A. less ; olderB. less ;elderC. fewer ; olderD. fewer; elder
有疑问?点此联系我们
收藏该题
查看答案
![](http://img.timuw.com/static/timuw/img/search_icon.png)