that.is his pen哪错了

that.is his pen哪错了 that is n___ alan's pen.his pen is blue. that is his pen变复数句 is that his pen?改为复数 is that your a book?哪里错了This is a pen and that's a ruler?Is this his pencil?哪里错了!求 Is __ your pen A.that B.this C.her D.his.That is his pen. His pen is in backpack这个句子哪里错了? Is that a your pen?那个单词错了? Is that you pen,mary?哪里错了 That is his pen.(改为否定句） 连词成句：is that green pen his (.) that is his pen变一般疑问句并否定回答 Is __ your pen ?That is his pen. A.that B.this C.her D.his.可以告诉我为什么?谢谢 this is his pen.my is in the pencil box 哪里错了 怎么改 this is his pen.my is in the pencil box 哪里错了 怎么改 that's his pen (对划线部分提问)对his提问（）（）is that=()()()() that is your pen. That is green pen