it is a key hes is a bay 怎么改成复数

it is a key hes is a bay 怎么改成复数 It is a key缩写 It is a key a key提问对 a key 提问 What color is it?A.It's a key.B.It's a yellowWhat color is it?A.It's a key.B.It's a yellow key.C.It's yellow.D.It's key. what's this?A this is key B it's key应该选几 the teather wonders _____ A.whose key is it B.whose key it is 选B,为什么 it is my key 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 What is that?对应的答句 A.It is key.B.It isWhat is that?对应的答句A.It is key.B.It is a orange.C.It is Z. 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. there is a key and a book John is a waite.He hes big eyes and a mouth.He likes grapes是什么意思 It is a key.(对划线部分提问)画线部分是a key______ ______ it? 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 Knowledge is a treasure ,but practice is the key to it 翻译成中文,是什么 This is an orangge in English.in english.对an orange提问2.That is banana.对banana提问3.It is a key?对a key提问