No it is not. It is either grandparent's (belonging to one grandparent) or grandparents' (belonging to more than one of them).
It is proper grammar.
No, it is not proper grammar. The correct phrasing is "you and I."
no
The proper grammar is "There has come a time." "There" is the subject of the sentence and is singular, hence the correct verb form to use is "has" instead of "have."
Nope!
"She did not have" is the proper grammar.
It is proper grammar.
"Don't it" is not proper grammar. The correct form is "doesn't it".
It is proper grammar to say, "I bet you".
no, that is definitely not proper grammar.
Yes, starting a sentence with "then" is grammatically correct, especially when showing a sequence of events or actions. However, it is usually used sparingly to avoid overuse and maintain variety in sentence structure.
no
"Into" is used to indicate movement or direction, while "in to" is used when "in" is part of a verb phrase (e.g., "to turn in to the parking lot").
What was there is proper grammar.
There are many grammar practice websites that will help people learn proper English grammar. These are necessary since many people have no idea what proper grammar is these days.
The proper grammar is "There has come a time." "There" is the subject of the sentence and is singular, hence the correct verb form to use is "has" instead of "have."
It's you are, you is is not proper grammar.