Is this a key?Yes,it"s.这句话有什么错?

Is this a key?Yes,its.这句话有什么错? what's this?A this is key B it's key应该选几 Is that your key? _____ .This is my key . A. No B .Yes C. OK D .Excuse me 20.英语单项选择--- ________ ,is this your key?---Yes,it is.Thank you.A.Hello B.Hi C.Excuse me D.Sorry Is this your star? A.Yes,this is. B.Yes,it is. It is a key缩写 Is this a plane?yes,it is 改复数句 Is this a picture.Yes,it is.错在哪? Is this a picture.Yes,it,is.哪里错了 Is this a ____of your family?Yes,it is. It is a key.( )this is my pen.( )black.括号里填什么啊It is a key.( )this is my pen.( )black.括号里填什么啊 look,（ ）this picture.（ ）is it?It is a key补充句子 a:tony,is that your key?b:no.___key is here.that's___my key.a:is that mark's___?b:yes,it is.有些大写我没写. Is this a radio?是选择哪种回答：yes,it isn't. yes,it is. is this your book?yes,() A.this is B.it isis this your book?yes,()A.this is B.it is C.it isn't Is that your key?yes,It's （） What is this?It is A key B pen C map D quilt What is this?It is A key B pen C map D quilt