Mrs Debase. (no apostrophe)
Mrs Debase's handbag. (Possessive apostrophe)
They'd.
Well if her name is "Agne" then the apostrophe would go here "Agne's ". However, if her name is "Agnes" then the apostrophe would go here "Agnes' "
There is no apostrophe in that sentence. It would be in: The scouts' tents.
it wouldn't have one unless it had an s, like Ronald's.
The contraction for I would is I'd. I'd go see a doctor if I were you.
After the 's' - the ladies' bags.
If it is required, the apostrophe would come after the Z but before the S. "This is Mr. Buzz's stinger!"
there is no apostrophe is yours unless a person's/object's name was "Your" and you are talking about something belonging to Your, in which case it would be Your's
An apostrophe is not required.
If this is someone's name, as I suspect it is, the apostrophe will go as such "Vikas's"
You don't need an apostrophe in that sentence. Studentsis a plural word, not a possessive.
doctor's (more than one doctor)