Grammar Quiz: Commas

Instructions: Find the comma error (it could be a missing comma or a comma where there shouldn’t be one) in each of the sentences; if there is no error, choose the "no error" option. 

. Copernicus, Darwin, Einstein, Watson, and Crick have all changed our view of the world, and our place in it.

. The factors, that contribute to the psychological addiction to marijuana, are various.

. Although, exercise and healthy eating are not the most convenient weight-loss methods, they provide many benefits for anyone interested in losing weight and staying healthy.

. The first artists to pioneer "Gangster Rap" were east-coast rappers, including Notorious B.I.G. and Ghostface Killah, while the west coast had a more laid-back approach with artists such as, Tupac Shakur, Dr. Dre, and Snoop Dogg.

. Beginning in the 1990s, fashion magazines have often portrayed skinny women with oily matted hair, black nail polish, blue lips, and thick eye makeup.

. Even moderate drinking, which is defined as 12 ounces of beer, 1.5 ounces of liquor, or 5 ounces of wine, has been found to cause internal bleeding.

. The kinds of jobs that are at the greatest risk of being outsourced, are those of middle wage-earners, who earn about $40,000 annually.

. The two video games involved in the study were Doom, a popular first-person shooter game, and Mahjongg Clicks a non-violent game.

. In the Christmas movie, Jingle All the Way, a father is ruined in his effort to find a Christmas gift for his son, Jamie. (HINT: Jamie is the character's only son.)

. In a CBC News broadcast, Arthur Tateishi, explains that it took four years to get his family members together after the war began.

. Outsourcing of information technology and business services, leads to average cost savings of 15 per cent, a survey found on Thursday, disproving market claims that it can reduce costs by more than 60 per cent.

. While many animals can roar, sing, grunt, or otherwise make noise, linguists have believed for years that the key to distinguishing language skills goes back to our elementary school teachers, and basic grammar lessons.

. The American Academy of Pediatrics suggests that parents ban television for children under two. In reality however, 40 per cent of three-month-old children watch some television every day, and 90 per cent of two-year-olds watch television regularly.

. Researchers Eastin and Griffiths found that games involving the kind of violence that a person is likely to encounter in real life, such as fighting, had a greater effect on aggression, than games involving rarely encountered violence, such as shooting.

. Stereotypically a football player is seen as aggressive and focused, while a cheerleader is seen as subservient and concerned with her appearance.

. Jeff Deffenbacher, Ph.D. a specialist in anger management, believes that some people naturally have a low tolerance for everyday annoyances.

. According to researcher David R. Brown, "there are a lot of benefits that can be attributed to sports, and lower odds of suicidal behaviour is one of them."

. In 1885, the Canadian government introduced a racist bill, the Chines "head tax" that forced every Chinese person entering the country to pay a $50 fee.

. As anorexia is a serious disorder today it will not be easy to eradicate, but it is possible to educate people about its causes and possible consequences.

. Cocaine, a crystalline alkaloid obtained from coca leaves, is a stimulant to the nervous system, and is a very addictive drug.

. Markus agreed that the purpose of great literature was to both entertain and inform, not only to entertain.

. After studying at The Cordon Blue(r) in Paris for two years, Louise flew back to Canada on July 2, 2015 and began working at The Fairmont Royal York Hotel.

. Before deciding where to send her university applications, Charlene visited several distant campuses but she realized, to her surprise, that her first choice was in her home town.

. They visited the gallery, she left early; he stayed until closing.

. Rover is a good-natured Labrador pup who loves to go for walks, play with his toys, and swim in the lake.

. After skimming through the subject lines of 35 items in his junk mail box Hamish deleted all of them and went back to his homework.

. After the speaker's compelling performance, we left the theatre feeling uplifted and ready for a challenge.

. The dancers who were graduates of the local dance school, performed to an excerpt from Tchaikovsky's The Nutcracker.

. After watching the program with my friends Michel and Armand, the three of us decided to order a pizza. (HINT: Michel and Armand are the subject's only friends.)

. Jeremy told us, that he wanted to visit several countries in his lifetime, such as India, Peru, and Egypt.

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