I regret ____ harder at school.A.not to have worked B.not having workedA为什么不对?

I regret ____ harder at school.A.not to have worked B.not having workedA为什么不对? I regret I always regret not ______ harder when I was young.A.studyingB.having studiedC.to studyD.to have studied I always regret not ( )harder when I was young.空处为什么是having studied,而不是studying? 1.we should help those still ____ for independence.A struggle B struggling c struggled d to struggle 2.I regret ____ harder while young A not having worked B not work C not have worked D not to work 3.We ____tremendous changes in the city A glimpsed 求英语高人速解几道英语语法选择题!1.we should help those still ____ for independence. A struggle B struggling c struggled d to struggle 2. I regret ____ harder while young A not having worked B not work C not have worked D not to work I regret ____(have)to do this,but I have no choice. I think I should work ____(hard) at English填hard还是harder?为什么 I will never regret To get more money means ____(work )harder and harder. ____ is that I have promised to make friends with the dishonest girl.A.The only thing what I regret B.What I regret most C.All what I really regret most D.What that I regret most 请问A错在 哪里 I will make you regret I will make you regret Distance expanded.I regret it. I have no regret about... In the years ____ ,I will work harder.A.come B.to come C.coming D.will come Don't regret?Don't regret was I I'll study harder and harder from now on