is,a,pencil,that,this,is,orange,an,and 排成句子

Is that a pencil s___? -Is this a pencil?-_________.A.Yes,thi-Is this a pencil?-_________.A.Yes,this is.B.Yes,they are.C.No,it isn't. that is a pencil.改为复数句 This pencil is 18cm.That pencil is 20cmThis pencil is a ___ ____ than that one Is that a pencil?和That is a pencil?有区别吗? is,too,that,pencil,my,and) (is,case,yellow,this,a,pencil(is,too,that,pencil,my,and) (is,case,yellow,this,a,pencil)连词成句 用a/an或者the填空.Han Meimei is( )Chinese girl and Lucy is ( ) English giry.what's that? It's( ) cake.Is this ( )eraser? No, it's ( ) pencil-box.thi is( ) old bookl am from ( )U S AIs that ( )orange? No, it's( )eg That is a pencil case对a pencil case画线提问 改错改错Is that a pencil case?Yes,it's. is,pencil,that,a.(连词成句） 对括号部分提问:That is (a pencil sharp enet) That is a pencil case.(改为否定句) That is a pencil sharpener怎么变为一般疑问句? That is a pencil box 这句话哪儿错了 That is a pencil box（改为否定） that is a red pencil变为否定句 That is my a pencil-box.改病句 is a dog over there?这句话应该填thi还是that,