we don't know it_____.这事我们不十分清楚.let's eat pears.is this ____

1.We all don't know ____ this afternoon. I don't know _____ ____ this book is.【我不知道这本书多少钱】 Don't eat the fish until it_____ i don't know ____ book this is. i don't know ____ book this one is?英语 I don't know how we use this computer=i don't know_____ ____ This is a boy.I don't know ____ name.A.it's B.his C.he's D.h we don't know.let's ask our teacher ( ) it.填空 一分钟 we don't know -------next ,let's go and ask Mr Li A what to We don’t know 【whether to do】 in next.let’s go and ask Mr Li we don't know whether to do it next .let"s go and ask MR Li --- I really don't know if we ____ any lessons this Sunday.