Is your pen black? Yes,it's. 这句话有什么语病吗?

改错句 Is your pen black --------------------yes ,it is Is your pen black? Yes,it's. 这句话有什么语病吗? that is your pen. 根据所给提示,What's in your bag （pencil-case)________________________________what colour is your new pen?(black)__________________________________ this pen is black.中文意思 my pen is black.做否定回答 My is black pen改成一般疑问句? The pen is black 改为同义句 The black pen is his.（复数） Yours is black.还是 Your is black. 英语 改复数句This is a pen.Is this your backpack?It's a black bag my pen is black(对black提问)______ _______is_______pen. This not is your pen,your pen is white.改错 what is your pen colour __(这儿)is your pen Is this your pen Is this his pen?选择疑问句 His pen is（black）.（对括号部分提问 THE BLACK PEN IS JENNY JENNY怎么改