Preterite indicates a single event ( something that you dosen't do so often )
the imperfect indicates something that you do habitual
If ur asking what it means, its "How to answer that view with us?"
The celebration (two words) is a Catholic tradition found in all parts of the Spanish speaking world.
It’s c. Mandaste because it’s asking if you had sent the postal card to your family
1.) Estoy
. 2.) Sofá.
3.) Está.
4.) Está
5.) Está.
6.) Lámpara.
Hope this helps
