is my ruler and that his book is (.)

is my ruler and that his book is (.) that is my ruler this is my pen.and that ruler is () too. this is his book that is your ruler 改成一般疑问句并作肯定否定回答 this is my ruler.that is his dictionary.this is my uncle.the This is my ruler.His ruler is not an old.--------- --------- 连词成句this,a,book,is,and,that,is,ruler,a______________________ Is that his ruler(作肯定回答) my,is,this,and,that,ruler,my,pencil,is怎么连词组句 MY,RULER,IS,THAT连词成句. 1.Is that his book? This is his ruler(改为复数句) That is my key(改为复数句) These are his