It is never good to waste time for playing,isn't it?请问这句话对吗?后面是应该用is it还是isn't it呀,讲解下,谢

It is never too late to train children to be good.请翻译一下此句话, It is never good to taken an enemy for a friend翻译 a---- goes up and never goes down How good it is to be always young 如何翻译It is never a good idea to skip a meal? it is good practice to... it is never too late to It is never too old to learn. 英语翻译It is good to learn at another man's cost.Great minds think alike.Better late than never. 英语翻译It is good to learn at another man’s coatGreat minds think alikeBetter late than never I'm like the sister she never had.It is always good to see her.zhun na! It never does a boy much good to shoot him _____ regular exercise is very important.It’s never a good idea to exercise too close to bedtime.A.It B.As C.Although D.Unless good better best^never let it rest~till good is better^^^ and better is best~ Good better best.Never let it rest.And till good is better.Better is best. It is good to help others.(英译中) it is a good day to die it is good enought to be understood is it important to look good?why?