This is my bag
That is your phone
These are my cars
Those are apartments
Hi Hyeon Yeong. Your sentences are all correct and show that you understand how to use this, that, these, and those properly. Great work keeping them clear and simple. Keep practicing, and I will continue to do my best to help you become even more confident in English.
~ T. Lia
This is my bag
>> CORRECT
That is your phone
>> CORRECT
These are my cars
>> CORRECT
Those are apartments
>> CORRECT