A: I like mangoes
B: I do, too (I like mangoes, too) / So do I
___
A: I don't like bananas
B: I don't, either (I don't like bananas, either) / Neither do I
___
A: I don't like papayas
B: I don't, either (I don't like papayas, either) / Neither do I
___
A: I like roasted corn
B: I do, too (I like roasted corn, too) / So do I
___
A: I don't like potatoes
B: I don't, either (I don't like potatoes, either) / Neither do I
___
A: I don't like vegetables
B: I don't, either (I don't like vegetables, either) / Neither do I
___
A: I don't like fish
B: I don't, either (I don't like fish, either) / Neither do I
___
A: I like meat
B: I do, too (I like meat, too) / So do I
___
A: I don't like chicken
B: I don't, either (I don't like chicken, either) / Neither do I.