将下列句子变成一般疑问句,并作肯定或否定回答1、He is Black答:1.Is he Black? Yes,he is./No,he isn't.2.Am I in Grade 1? Yes,you are./No,you aren't.3.Are you a workers? Yes,I am./No,I am not.4.Is this my book? Yes,this is./No,this isn't.5.Is that an English dictionary? Yes,that is./No,that isn'...