it's a waste of time doing sth

最佳答案回答时间：2019年5月7日 - 8个回答 - 65两种都可以。一、It's a waste of time doing sth.1、It is a waste of time going to the docto...zhidao.baidu.com

5天前 - it' s a big part of the problem.If you stake (拿……冒险) your hopes for a breakthrough on trying hard... 18.A.may not B.mustn't C...