For help with punctuating introductory words, phrases, or clauses, see pages 326-27 of A Writer's Guidebook.

NOTE: Cutting, pasting, and adding or deleting text may cause awkward line breaks which you can correct by backspacing. Exercise 30 Commas after introductory words, phrases, or clauses Insert commas where necessary in the following sentences. 1. To get permission to build the government had to do an environmental impact study. To get permission to build the government had to do an environmental impact study.   2. While they were conducting this environmental impact study consultants discovered that the proposed structure would be built on top of an African slave burial ground. While they were conducting this environmental impact study consultants discovered that the proposed structure would be built on top of an African slave burial ground.   3. After an outside team of archaeologists concluded that most of the burial ground had already been destroyed by previous construction the building went ahead. After an outside team of archaeologists concluded that most of the burial ground had already been destroyed by previous construction the building went ahead.   4. But once construction was under way construction workers uncovered a large burial ground with more than four hundred bodies. But once construction was under way construction workers uncovered a large burial ground with more than four hundred bodies.   5. Naturally construction was immediately stopped. Naturally construction was immediately stopped.   6. In the last year of World War I an epidemic resulted in more deaths around the world than the war had caused. In the last year of World War I an epidemic resulted in more deaths around the world than the war had caused.   7. Carried to the European trenches by American soldiers the influenza quickly spread. Carried to the European trenches by American soldiers the influenza quickly spread.   8. Sadly many young men who might otherwise have survived the war perished from the virulent strain of flu. Sadly many young men who might otherwise have survived the war perished from the virulent strain of flu.   9. In a development that may help to prevent this kind of epidemic from occurring again epidemiologists recently discovered that the frozen bodies of several 1918 flu victims are buried in the Norwegian permafrost. In a development that may help to prevent this kind of epidemic from occurring again epidemiologists recently discovered that the frozen bodies of several 1918 flu victims are buried in the Norwegian permafrost.   10. By studying the frozen flu virus these scientists hope to learn more about that deadly epidemic and its modern counterparts. By studying the frozen flu virus these scientists hope to learn more about that deadly epidemic and its modern counterparts.   Please fill out the fields below to ensure correct delivery of your exercise. You will receive a confirmation notice. Your e-mail address Your instructor's e-mail address Your name CAUTION: If you check your answers and go back to this page using the links on the answer key, your changes will be gone. Use the back button on your browser to keep the changes intact. E-mail exercise to instructor Student answer key for this exercise (even-numbered answers only) Instructor answer key for this exercise (password protected)

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