is this your book?yes,() A.this is B.it is

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is this your book?yes,() A.this is B.it is
is this your book?yes,()
A.this is B.it is C.it isn't

再问：为什么选b
再答： book是物，用it代指
再问：哦，谢谢
再问：能教我一下that，this，those，these怎么用吗
再问：我这课没听
再答：这些都是代词
再答：但不能用于回答提问
再答： that那个 those那些
this这个 these这些
再问：哪些事复数用语，哪些是单数用语
再答： that this用单数
those these用复数
再问：嗯
再答：呵呵

is this your book?yes,() A.this is B.it is Is this your book?Yes,it is Is this your star? A.Yes,this is. B.Yes,it is. Is this a book?" "Yes,this is." is this your friend?yes,()is .A.this B.t Is this gutar your Yes,it is( ) is this your aunt?a、 yes,she is b 、 yes it's Is this your brother,Jack?___________ A yes,it is B yes,she 选择填空:is this your suit?A:yes,it is Tom is suit.B:yes,it is T Is this book ( yes,It belongs to ( ). Is this a ____of your family?Yes,it is. Is this your notebook?A.Yes,it's B.Yes,this is C.No,it,isn't