Past Simple vs

He will be going to the party.

I am eating breakfast.

She was studying for her exam. (correct)

They have been playing soccer.

They are singing a song.

He was playing basketball. (correct)

She has written a book.

I walked to the store.

They are going to the beach tomorrow.

She will be traveling to Europe next month.

I had been working on my project all day.

He was studying while his friends were playing. (correct)