No. It's not necessary.
It should be--- Mrs. Williams is your favorite baby-sitter.
Who is your favorite French artist (end with question mark).
My babysitter just arrived, "Hi I'm your babysitter" Is that the babysitter?
No, you do not capitalize "first birthday" in a sentence.
You only capitalize 'deceased' if it is at the start of a sentence.
babysitter
The only noun in the sentence is babysitter, a closed compound noun.
Who is your favorite French artist (end with question mark).
The correct way to capitalize the sentence is: "My favorite novel, The Adventures of Huckleberry Finn, is set mostly on the Mississippi River."
My babysitter just arrived, "Hi I'm your babysitter" Is that the babysitter?
Babysitter is the compound word in the sentence "Their babysitter is dependable even though he is a boy."
You do not capitalize chickenpox in a sentence. The exception is if the word is the first in the sentence.
No, you do not capitalize "first birthday" in a sentence.
Yes, "nuns" should be capitalized in a sentence as it is a proper noun referring to a specific group of people who belong to a religious order.
You only capitalize 'deceased' if it is at the start of a sentence.
Babysitter is the compound word in the sentence "Their babysitter is dependable even though he is a boy."
Babysitter is the compound word in the sentence "Their babysitter is dependable even though he is a boy."
No, you do not capitalize marine biologist in a sentence. (Unless marine is in the beginning of the sentence)