It is my opinion, therefore, that you should take the job.
If you complete your work before five o'clock, you may leave.
Enclosed is a stamped, self-addressed envelope
5 True/False Questions
To set off expressions that designate the source of a quotation (dont use if quoted question or exclimation is followed by explanatory words, or if quatation is introduced by "that") → For his birthday he received a shirt, a tie, and a pair of pants.
When independent clauses are joined with a coordinating conjunction → I like American history, But I never can memorize dates
After an introductory phrase which is four words or longer (do not use a comma if the introductory phrase is followed by a verbis four words or longs → In a manner of speaking, we all threw in the towel.
After Introductory words or expressions (adverbs or transitions) → Nevertheless, her hours are flexible.
To separate items in a series of three or more → For his birthday he received a shirt, a tie, and a pair of pants.