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GRAMMAR & STRUCTURE — Exercises
Punctuation

 
  Answer the following questions to check your knowledge of common punctuation rules.

 
 
1. Which answer is correctly punctuated?
  I saw a big dog yesterday it was very dangerous looking.
  I saw a big dog yesterday. It was very dangerous looking.
     
2. Which answer is correctly punctuated?
  When Tom was young, he played baseball.
  When Tom was young. He played baseball.
     
3. Which answer is correctly punctuated?
  Mary sold her couch dining table and piano.
  Mary sold her couch, dining table, and piano.
     
4. Which answer is correctly punctuated?
  Bob is going to be our new part-time research assistant.
  Bob is going to be our new, part-time, research assistant.
     
5. Which answer is correctly punctuated?
  That woman watching TV is my aunt.
  That woman, watching TV, is my aunt.
     
6. Which answer is correctly punctuated?
  Dr. Jones, my dentist, is very nice.
  Dr. Jones my dentist is very nice.
     
7. Which answer is correctly punctuated?
  I was full of energy this morning; but, now I'm tired.
  I was full of energy this morning; now I'm tired.
     
8. Which answer is correctly punctuated?
  I may go home, or I may stay here.
  I may go home or I may stay here.
     
9. Which answer is correctly punctuated?
  Tom can't go to the beach: he's got an exam.
  Tom can't go to the beach he's got an exam.
     
10. Which answer is correctly punctuated?
  You can take my son on your boat with these conditions: you have passed a "safe boating" course; you have an approved and properly fitting child's life-jacket; and you are a good swimmer, with water rescue skills.
  You can take my son on your boat with these conditions; you have passed a "safe boating" course: you have an approved and properly fitting child's life-jacket, and you are a good swimmer: with water rescue skills.