Hello Julie! ^^ Thank you for submitting your homework today. Kindly take note of the corrections that I made. Thank you! ^^

1.I went to Seoul. -Correct
2.We went to ??°???. -Correct

Julie: We went to musium.
Correct:  We went to museum.

Julie: I was swimming.
Correct: I swam.

Julie:We saw a many big stores.
Correct: We saw many big stores.