yes. It has problem. "먹어도 또 보여요" is correctly senetence. but possible understaind it and an article. not problem in grammar.
I thought this senetece during about 10 seconds. and I understand it.
It means to english "Eat again, eat again, eat again, It looks again"
"약을 왜 버렸노?" it's 경상도 folks. "약을 왜 버렸냐?" standard.
"먹어도 다시 보여요" it's not 경상도 folks.
it's only strange situation. so we dont understand it.
you were explain to grammar.
probably, that's not right.....
I don't understand exactly. because doesn't learn to korean grammar.
finally, sorry to you that my lacked english skills.
thank you.