Capitulo 1A bue to talk about activities
to dance bailar
to sing
to run
to draw
to write stories
to listen to music
to ski
to talk
on the phone
to go to school
to play video games
to read magazines
to ride a bicycle
to skateboard
to swim
to spend time with friends
to skate
to play sports
to play the guitar
to work
to use the computer
to watch tv

Hey there!

Okay so we know that our verb is estudiar... but what we need to find is the conjugation.

Now based off of this sentence here, we can tell that this is most likely in the past tense, since it says, "El año pasado,..." 

The "yo" form of estudiar in past tense is...  estudié   < There's your answer

Hope this helps! :D

Please vote me for Brainliest if there is a second answer!