Answer:
1. De donde eres
which means where are you from? All the others mean how are you?, Whats new? and How is it going?
2. De nada
which means you're welcome, All the others mean goodbye, see you later, and see you tomorrow. Which are all ways of saying goodbye.
3. La siento
which means I can feel it, All the others mean you're welcome, delighted, and and the pleasure is mine.
Perhaps I’d need more context, but I think the missing word would be something along the lines of les or something. I’m new to Spanish, sorry.
Cuando tu comes, es bueno a comer mucho vegetales y frutas. ¡Granos son bueno para tu cuerpo también! Tienes que comer mucho carne para que tus músculos crezcan.
(sorry if my spanish is bad, i don’t usually spell like this in spanish haha)
