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' "
Mrs Debase. (no apostrophe) Mrs Debase's handbag. (Possessive apostrophe)
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.