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How to write impersonal constructions with SE in the present tense?
In the question: en las libraries SE VENDEN libros y revistas is the statement.
I understand the use of SE, and i understand it is a general statement, hence, the impersonal. However, how do i know the root ending of the word? -en?
Another example: En costa Rica, SE HABLA español. How do I know it ends in habla and not hablan?