请问 That is a pear .改为复数形式

请问 That is a pear .改为复数形式 This is a apple.That's a pear.改错. You can see that is a pear.改成否定疑问句 You can see that is a pear的祈使句 You can see that is a pear.(改为否定疑问句） （）1.This is () pear and that is () apple.A.a,an B.a,a C.an,a This is a pear.改为复数句 What colour ( -It's yellow.A.is pear.Bis a pear.C.pear is .D.it is,为什么? We can see that is a pear.改为否定疑问句（ ） （ ）see that is a pear?顺便说一下The boy behind the door is Tom.对画线部分提问，画线部分是behind the door that pear is yellow的同义句是什么? That is a tiger 改一般疑问句 is that a mouse?改复数句 is that his a room?怎么改/ That is a photo.改复数 This pear is colour that one.A.same；from B.the same；as C.different；as D.the different；as This is a yellow pear.对a yellow pear 划线部分提问 These are an apple and a pear.还是This is an apple and a pear. is it a pear or an apple?（用pear回答）