Corrections:

Patty: It's a computer in my room.

Correct: There's a computer in my room.

Patty: It's a piano in my room.

Correct: There's a piano in my room.

Explanation: We use there to point out something.

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Hello Patty!

Thank you so much for doing your homework. It is really great to hear the things that you like in your house. Keep that up! Just take note of the corrections I gave you so that next time you'll be able to apply it on sentences that are similar to the sentences you made today. See you next time.

Teacher Ian