this怎么读说下?是类s 还是地s

this怎么读说下?是类s 还是地s this怎么读吗?是类s 还是地s this怎么读是类s 还是地s what's this?回答是It's N .还是It's an N . 选词填空what’s this?是it’s classroom还是it’s my classroom what's this?的答案是this is a.还是it's a. What`s this?回答是This is a chair.还是It`s a pencil. what’s this 怎么回答? What's this 怎么读 what's this?怎么读? what's this怎么读 This book is Tom`s 其中Tom`s 是形容词性物主代词还是名词性?