I cleaned my room alone yesterday.

I cleaned my room alone yesterday. I found he was wrong, then. I raised some problems about his plan. I sang my favorite song in the singing room. He bidded a good price for my house. I founded my own company 2 years ago. I lay down on the grass. Someone bent the tree. Temperature rose about 2 degrees recently. I really worshiped my grandfather.

Hi there Mr. [이름]!

Happy Tuesday :))
Thanks for doing your homework, see ya later. :))

I cleaned my room alone yesterday.
>>CORRECT

I found he was wrong, then.
>>CORRECT
OR>>I found out he was wrong then.

I raised some problems about his plan.
>>CORRECT

I sang my favorite song in the singing room.
>>CORRECT

He bidded a good price for my house.
>> He bid a good price for my house.

I founded my own company 2 years ago.
>>CORRECT

I lay down on the grass.
>>CORRECT

Someone bent the tree.
>>CORRECT

Temperature rose about 2 degrees recently.
>>CORRECT

I really worshiped my grandfather.
>>CORRECT