Modal or not modal, this is a question! (by W.S.)

Hi clasmates!
Yesterday I read in a magazine this question " what can it be?", then I ask me: When do we to use?
WHAT CAN IT BE?
or
WHAT COULD IT BE? (modal verb)
If you help me, I will be very grateful to you.
See you, Anna Maria

Hi friends!

I found a interesting website for to learn english.
If you want to see this exercices, you must writte in google edu 365. Then you clik english and then ESO. You will find a diferent lessons and you can practise...
I hope this website will be interesting for you.

See you

Anna

Hi friends.
About the catalan word "deixalleria", this is a correct word. Now a days, is better to consulting DIEC (Diccionari de l'Institut d'Estudis Catalans)than Pompeu Fabra's dictionary. "Deixalleria" is an accepted word in this dictionary.

See you later friends

Anna

Amerrika

Hi Colleagues!

Today is my turn of write:

Last thursday, we went to the cinema to see the film Amerrika. It's a great film, but a little muddle because the actors speak Arabic and English. The female lead is a good Palestine actress who te live us the film in first person.

What do you think about it?

See You,

Isa

Hello Anna!

How are things?
Yesterday I miss you in the class of english.

See you

Isa.

Centre or center!

Hi all!
What is the difference between "centre and center"? (Imma's written "Recycling centre or Recycling center" in her comment.)
When we have to use both?

waste place?

Dear clasmates:
According to Pompeu Fabra's dictionary the catalan word "deixalleria" doesn't exist. The right word is "deixador"= "per deixar". It spanish translation should be "residuos" and the english translation "waste place". I think that "deixalleria" it's a new catalan word. What do you think about it?