Spanish language Q&A Forum

The question is:

No ________ papeles al suelo.
You must not throw papers on the floor.
HINT: Choose the correct passive form.

The four possible answers are:

se puede tirar
se puedes tirar
te puede tirar
se pueden tirar

The correct answer given is se pueden tirar. Should it not be:-....   “No se deben tirar papeles al suelo”

Why do we say "pasear al perro" instead of "pasear el perro". Why is the "al" used?

In the example:

"Los que hayan reservado con antelación pueden ir a esa ventanilla"

why is it 'hayan' and not 'han'?

For example

Ellos no saben cuándo van a llegar

Ellos no saben que lleguen?

Yo no sé cuándo van a llegar

Yo no sé que lleguen/llegarán?

They all have an element of doubt in which would suggest the subjunctive but there is a rule here that I am not understanding fully!

Thanks

Nick

How will be equivocar for el/ella ?

Why "olviden sus problemas" instead of "se olviden de sus problemas" or "olviden de sus problemas"?

In this exercise you give the statement:  "Me gustas mucho."  In all the info at this site I only see gusta and gustan used (singular and plural) which I understand.  Could you please explain this form of guitar?

I don't know how to access the audio.  Please advise.

Shouldn't it ne present simple no sabemos?

Regarding o to ue verbs in the 1st person plural conjugation

For morir, we use muramos

For poder, we use podamos.

why the discrepancy using 'u' vs 'o' ?