Please correct the following sentence.

I sang a song.

We sang a song together.

I used a pen,

Miki sat in front of her family.

We finished our homework.

Ms.Ai made cookies.

My friend came to my house.

I drank some juice.

We go to the some library.

Let's go to the city.

Question

Please correct the following sentence.

I sang a song.

We sang a song together.

I used a pen,

Miki sat in front of her family.

We finished our homework.

Ms.Ai made cookies.

My friend came to my house.

I drank some juice.

We go to the some library.

Let's go to the city.

Answer

I used a pen. (just needed a period at the end)

Ms. Ai made cookies. (just added a space after "Ms.")

We're going (or "We went") to a library.

Answer

I saw no errors.
I made no corrections.