Spanish language Q&A Forum

I thought on reading this lesson that all 'er' verbs with 'o' in would follow this rule to become 'ue' but then got a test on 'toser' and got that wrong (tried to put tueso, not toso).  Plus comer stays as 'o'.

How do we know when to apply this rule, is it a case of just learning the verbs which are semi-regular? Are there a lot or is this pretty doable?

I put this lesson in my notebook, it wont let me retake the quiz

I want to ask if you can tell me the format for Letter Writing (Imperfecto/ Indefinido))

In regard to "In Spain, there is a large family of potters" has the hint: "put "large" in front of "family", potter = alfarero/a". 

The first hint seems a little misleading.  Shouldn't we use "familia grande" and not "gran familia" if we are translating large family since it describes the size of the family rather than the quality/inherent characteristic of greatness of the family?

No olvidemos el ejemplo de la revolución americana.  Elle estuvo la prueba que se podría lograr.