Is this a pear?改为复数句 Tom doesn't like hamburgers but Bob ( )

This is a pear.改为复数句 this is a pear tree.改为复数 but she doesn,t like pear ()apple this is a pear改为复数（要有some） Tom doesn't like writing articles(改为同义句) I don’t like them and Bob doesn't like them,either.(改为同义句） He doesn't like oranges.（改为复数句） It‘s a pear 改为复数句 i like salad.(改为否定句） bob and bill like hamburgers.（改为否定句） Tom and Tony like hamburgers.(改为否定句） This is Tom's parent. （改为复数句） Is this a bus （改为复数句