Exercise 6.4

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Circle the main idea and underline the controlling idea in each of the following topic sentences.

1. Exercising three times a week is the only way to maintain good physical health.
2. Sexism and racism are still rampant in today’s workplace.
3. Raising the legal driving age to twenty-one would decrease road traffic accidents.
4. Owning a business is the only way to achieve financial success.
5. Dog owners should be prohibited from taking their pets on public beaches.