CA couple of weeks ago, my neighbor moved to another house, and new person came to thateir old house. A couple of weeks ago, my neighbor moved to another house, and new person came to their old house.

"that house" makes it sound like a new person came to the neighbor's new house

Couple of weeks ago, my neighbor moved to another house, and new person came to thatmoved into her/his house. Couple of weeks ago, my neighbor moved to another house, and new person moved into her/his house.

My ex-old neighbor had a big bdog, and it often barked when someone crossed the road in front of the house. My old neighbor had a big dog, and it often barked when someone crossed the road in front of the house.

"ex-neighbor" sounds overly formal comma plus and is how you could combine these two complete ideas: 1. My old neighbor had a big dog 2. it often barked when someone crossed the road in front of the house. so we would use: , and or you could just say My neighbor had a big dog that often barked when someone...

My ex-neighbor had a big bdog and it often barked when someone crossed the road in front of the house. My ex-neighbor had a big dog and it often barked when someone crossed the road in front of the house.

You can also say "when someone walked past the house"

The new neighbor has a cat and it comes to my house's yard frequently. The new neighbor has a cat and it comes to my yard frequently.

The new neighbor has a cat and it comes to my house's yard frequently. The new neighbor has a cat and it comes to my house's yard frequently.

We were worryied that if we weren't good people, the cat would steal because of its cuteness. We were worried that if we weren't good people, the cat would steal because of its cuteness.

I am confused about what this means.

We were worryied that if we weren't good people, the cat would steal because of its cuteness. We were worried that if we weren't good people, the cat would steal because of its cuteness.

Not sure what you want to say here.Do you mean "we wanted to steal the cat cause it was so cute"?

Once my dad tried to touch and brush the cat's hair, the cat came forward and it seemed it liked to being brushed. Once my dad tried to touch and brush the cat's hair, the cat came forward and it seemed it liked to being brushed.

This sentence is fine if when you say "once" you mean "when". If you mean "one time," then you would need to add "and" after the comma

Once my dad tried to touch and brush/pet the cat's haifur, the cat came forward and it seemed ito liked to being brushedgetting pet. Once my dad tried to touch and brush/pet the cat's fur, the cat came forward and it seemed to like to getting pet.