...y parenting," this humble acknowledgment that kids are healthier when they have a wider range of adults to emulate and count on. Turns out, adults are healthier, too. It's a lot of pressure, trying to be that perfect family behind that white picket fence.
I should ___ Peter with his work, but I had a lot of things to do myself.A. help B. have helped C. helping D. be help这句话为什么要用虚拟?是因为but后面的句子用的是一般过去时?(本人英语初级者,不要介意过于深入)