Add a Comma to Each Sentence That Needs One

question 19

Short Answer

Add a comma to each sentence that needs one. Some sentences do not need a comma.
-Everyone was having a good time until the neighbors started to complain about the noise.

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Definitions:

Opportunity Cost

The cost of forgoing the next best alternative when making a decision or choice.

Employment Opportunities

Available job positions or career prospects within the job market.

Opportunity Cost

The value of the next best alternative foregone as a result of making a decision; the cost of missing out on the second best choice while selecting among several options.

Supply Of Labor

The sum of hours employees are prepared and capable of working for a specified rate of pay during a particular time frame.