No improvement to this sentence is necessary. It makes perfect sense on its own and sounds right. "Either" always takes an "or" else the word wouldn't make sense, as it's meant to contrast binary options.
eg.
I'm either going to eat food or drink water.
Answer:
1 - Lion don't eat grass.
2 - Mary doesn't drink coffee.
3 - Bill hasn't learnt to type.
Explanation:
1 - Lion don't eat grass.
2 - Mary doesn't drink coffee.
3 - Bill hasn't learnt to type
you are welcome
You should have posted a picture on here