1. Juan prefiere hablarlo.
2. Juan lo prefiere hablar .
3. Usted la pluma debe comprar.
4. Usted debe comprarla.
5. Los preferimos comer.
6. Preferimos comerlos.
7. El menú quiero ver.
I think everything is right. I speak Spanish and it is my native language but that homework is weird, we do not speak like that in Spanish at all. I understand why you are asking for help, I would never speak like that, I spend some time trying to figure out what they wanted the answer to be.
They are writing the sentences in the wrong order, even though is not wrong, it doesn’t look as good as it should be, does that make sense?
For example:
Instead of saying El menu quiero ver, I would say Quiero ver el menú.
The first one would translate as The menu I want to see, and the second one as I want to see the menu.
It even sound wrong in English.
Anyways, you can still say El menu quiero ver in Spanish so it doesn’t matter but you’ll sound weird, maybe like a robot.
Hope it helps!
