English Skills 10th Edition by John Langan, Zoe Albright

Exercise 12

There are two run-ons in each passage. Correct them by using the following methods:
• Period and capital letter
• Comma and one of these joining words: and, but, or so
• One of these dependent words: although, because, or when
A stimulating scent such as peppermint can help people concentrate better. The idea has practical applications, studies have shown that students do better on tests when peppermint is in the air. Maybe scented air could improve students' performance, it might help office workers be more alert, too.
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