This pencil case of rubbers____pink.A is B are C be D were

This is his pencil case. Is this your pencil case中文 this is his pencil case 复数句 This __ (be not)my pencil case This pencil-case is five and ten. This pencil case of rubbers____pink.A is B are C be D were the pencil-case iamade of metal.(metal)为划线部分.__ si the pencil-case __of? 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 pencil,this,is,the,in,pencil case连词成句用这个连词成句pencil,this,is,the,in,pencil case必须是问句 Exuse me!Is this your pencil case?改为复数形式 This is my pencil case改为复数形式 is this a pen ___ your pencil case This is a pencil case.(改为复数句子） 将this is a pencil case变为一般疑问句 Is this my pencil case?回答否定回答 is this a pencil case 做肯定回答快 Is this a pencil case?能这样写吗? This is a new pen.( ) it in your pencil case