It's very nice to look at _____ baby.A.an asleep B a sleeping C.a sleep 为什么选B?这句话的意思?

It's very nice ___you to write____me It's very nice! it's very nice () the girl to help the old it's very nice for school to have students. ( )oh,it's very nice It's very nice ( )you. It's nice to It's very nice.It's yellow. It's very nice talking to you和It's nice talking with you.介词哪个用的正确? It's very nice是什么意义 It,s very nice of you,中文, It's very nice of you What______this one?------------It;s very nice. Nice to .,It is very nice to.,Very nice to.之间的区别 It's very nice of you to write to me,为什么用of It's very nice of you to give me the chance. It's very ____ of you to lend me your bike.不能填“nice” it’s very nice （是用for 还是 of）you to do