if they live together than it should be Grandma and Grandpa's house because they have eqaul ownership of the house
I would say Thanks for accepting me in your home, rather than house...
If plural : Johnsons and Watsons Example: "The Johnsons are having dinner with the Watsons tonight." If plural possessive: Johnson's and Watson's Example: "The Johnson's dog dug up the Watson's vegetable garden." Both are correct depending on the context.
It is correct
It is correct to say them both, but it matters on what you want to say.
no it is not correct to say enjoy your vacations
bank it
No! "I am in the house" "I am at home" "I am home" "I am in the home of ___" are correct.
yes
Yes, it is grammatically correct to say "The haunted house looks very mysterious to you." You can also say "You find the haunted house very mysterious."
say cutie pie stuff
Yes it is actually
No, the correct way to say it is "I didn't go out of our house." In this case, "went" should be changed to "go" to form the negative past tense.
I would say Thanks for accepting me in your home, rather than house...
When people say I don't know it means that they can't answer your question because they are not smart enough to calculate the technical answer for that technically challenged question. When someone says I don't know, your question is probably for your grandma that has been in your family for quiet some time. Grandmas and grandpas have allll of the answers to your mysterious questions that no one seems to answer. Trust me on this one. This answer is personally and factorally truthfull.
Bricks ------------------- Yes, but it is also correct to say it is a brick built house (not a bricks built house).
It is correct to say "my father's house" with an apostrophe to show possession.
yes but you could also use : 'the house was facing to the west'