???????????????????????????????? ===CORRECTIONS===
Do Yuon: I'm taller than sister
Correct: I'm taller than my sister.
Explanation: Do not forget to use the possessive case "my" because you are comparing yourself with your sister.

Do Yuon: The city is wider than home
Correct: The city is?bigger than our house.
Explanation: The appropriate word for this sentence is "bigger" because we use the term "wider" if you are measuring a long distance or longer than usual from one side to the other. Don't forget as well to use the possessive pronoun "our" because you are comparing the city with your house.

Do Yuon: The crater is deeper than puddle
Correct: The crater is deeper than a puddle.
Explanation: Do not forget to use the article "a" because it emphasizes the other object being talked about or compared to.

Do Yuon: Computers is smarter than dog
Correct: Computers?are smarter than a dog.
Explanation: We use the be form "are" if the subject is in plural form.

*Above all this, I would like to remind you that on constructing your sentences you should always end your sentences with punctuation marks like period (.).

????????????????????????????????????===NOTES===
Hello Do Yuon! Thank you for submitting your homework today! Please take note of the corrections and your sentence constructions. Practice it and apply that to our discussions. Keep on studying well and I'll see you on Thursday. Bye! Take care.
~Teacher Carrie