[缩写]john is not boy.[用's还是isn't]?why?

[缩写]john is not boy.[用's还是isn't]?why? John is a ( ) boy. is not缩写 is not缩写 is not的缩写 is not的缩写 The boy whose name is John comes from England.The boy _____ the _____ John c The boy is John.（用Jim改选择疑问句）（ ）the boy john（ ）Jim? is not的缩写词 is not 的缩写是什么? is not （缩写形式） is not 的缩写是什么 is not 缩写形形式 John is not happy,____ _____ rich John is not happy.He is rich 连词成句think,is,that,I,boy,English,john John is the _____(two) tallest boy in my class John is a good boy.He a( ) helps his classmates. 把The boy's name is John.变同义句