Those are nine pencils.This is a bag.都改为一般疑问句并作肯定和否定回答.

Are those nine pencils?Yes,they are.No,they are not.
Is this a bag?Yes,it is.No,it isn't.
回答的时候不能用those 或 his嗯。谢谢。那His eyes are small.Her hean is small.呢？Are his eyes small?Yes, they are.或者Yes, his eyes are small. 我们一般都用前者，用代词代替his eyes简洁明了.hean 不知道你说的是哪个词。 语法上是一样的：Is her hean small?Yes, it is. No, it is not.