this these that those【1】 【 】is my classroom.【 】is the bulletin board,and【 】are the computers 【2】Are 【 】your books,and is 【 】your pencil
问题描述：
this these that those
【1】 【 】is my classroom.【 】is the bulletin board,and【 】are the computers 【2】Are 【 】your books,and is 【 】your pencil
答
This/That is my classroom. This/That is the bulletin board, and these/those are the computers.
Are these/those your books, and is this/that your pencil?
还是要看具体语境，这只是单复数问题~
答
this is my classroom.this is the bulletin board these are the computer
Are those your books, and is that your pencil?
一般说自己的东西用this 和these
问别人的用that 和those
答
【1】 【 This】is my classroom.
【That 】is the bulletin board,and【 those】are the computers 【2】Are 【those 】your books,and is 【 that】your pencil
答
this, that, those
these, this