If you are writing about Robert, then anything Robert owns would be written as Robert's.Robert's book fell on the floor.
If you see the last name Roberts, it already ends in s. To write a possessive, you would add the apostrophe: Roberts'.
A burglar broke into the Roberts' house.
Jesus is a proper noun ending in s. The apostrophe is simply added.Jesus' mother was Mary.Jesus' mother wept at the cross.
It should be Mother's Day.
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)
The apostrophe goes between the r and the s,showing mother's possession of the birthday.Example:"Tomorrow is his mother's birthday."An exception would be if you were talking about two mothers who shared a birthday. Then one might say "Tomorrow is the mothers' birthday," as it is now mothers that possess the birthday.
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