Is this grammatically correct ?

"cerraste el archivo? "

Someone pls ill give brainliest what would be the answer to this question question- miro mis libros y estudió la lección en silencio aquí (here). my answer- librería. my teacher said- try this one again! 'librería' is a false cognate; is doesn't mean 'library'.

Fill the blank with a la, a las, a los, or al. mi padre .

The teacher didn't explain this at all and i don't understand this