Answer to Question 1
Apostrophes
Apostrophes are used to form possessives of nouns, to form contractions, and to show
omissions in dates.
Answer to Question 2
colon
When an expression such as the following or as follows is used to introduce a list of items,
it is often followed by a colon. The list may appear on the same line as the colon, or it may
start on a new line.