remain to be settled

remain to be settled remain被动 the question remaining or remained to be settled?为什么? there are so many problems remaining to be settled.这里的remain是系动词还是不及物动词如果remain是系动词, remain to be 用法 remain doing和remain to do区别remain to do 和 remain to be done呢 several things remain to be remain seated和remain to be seated有什么不同 remain to be done和remain seated 区别. remain seated和remain to be seated有什么不同 remain stuck 和remain to be stuck有什么区别. 为什么是remain to be seen 而不是remain to see不是 remain to do this question remains to be settled为什么不能说是remain to settle,主动形式表被动!我的意思是主动形式表被动，比如说The book is good to read there are so many problems remaining to be settled?REMAIN不是没有被动语态和进行时吗.记动词要不要记及物不及物.可不可以记意思,记词性容易忘实用性又很低 The question_____ finally,we went home.A.to be settled B.settling C.having settled D.settled remain to be seen为什么等于appear/seem to be remain to be done是否等于remain doing?need doing是否等于need to be done? You'll see many problems ( )in this way.A settled B settling C to be settled D to be settlingYou'll see many problems ( )in this way.A settled B settling C to be settled D to be settling there remain some problems to be solved中的remain可以用be代换吗