That's all it takes to expose you to all kinds of nasty microbes. What you _______ know before you jump in!
As temperatures soar, the cool blue waters of a swimming pool can seem pretty inviting. _______ perhaps you should look twice before you take that dip. Thousands of Americans _______ get sick this season from the unsanitary condition of their pool water, according to the Centers for Disease Control. The last thing you want to think about when you're swimming is what tiny creatures might be swimming beside you. But the fact is that any pool _______ be contaminated with parasites and bacteria. _______ you're not careful, you could find yourself in the emergency room with a badly upset stomach!"

(From "A Quick Dip in a Dirty Pool", Personal Time, Your Health, TIME, July 23, 2001, page 62)

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