Is this boy'cap?这句话对吗

Is this boy'cap?这句话对吗 this boy is too stupid to answer this question 这句话对吗 如果不对 请改 this is a photo of _a_ _boy_.he is a lovely boy.这句话对吗 Whose is this book?这句话对吗? this is factory这句话对吗? is this hers cap? How clever a boy he is!这句话对吗? what a careless boy Robert is!这句话语法对吗 whose is it cap对吗 用适当的介词填空 who is the boy （）a yellow cap?This 对应词填空This is a boy's cap.It's not a ___ one. This cap is ___ (I).