这句话是什么时态?I regret not having accepted your advice.

这句话是什么时态?I regret not having accepted your advice. I regret _ your advice.A.not taken B.not to take C.not takin i regret()your advice at that time You are right .I regret ------your advice A to take B not ta he regret（ ）my advice.a.not having b.not take c.to have not 1.You are right.I regret _____ your advice. I regret not to have started earlier与I regret not having sta I regret having left the work unfinished.这是什么语法现象? I always regret not ( )harder when I was young.空处为什么是having 英语翻译Today I do not regret,nor am I ashamed of having been po regret not having worked hard at school i did not know you were here 这句话有错吗 是什么时态