Exercise 2. Underline the statement you think would make the best topic sentence of the paragraph.

1.

a. My sister spends hours a day on the Internet.

b. The “Information Highway” is growing every year.

c. Most of what I read on the Internet bulletin boards is garbage.

2.

a. Ice cream is a popular food.

b. I often eat ice cream as a snack.

c. Ice cream contains more chemical additives than almost any other food we eat.

3.

a. The bicycle is the most energy-efficient form of transportation ever invented.

b. Someone stole my mountain bike by cutting the chain.

c. My cousin rides her bicycle all year round except January and February.

4.

a. Medical drugs can be just as dangerous as street drugs.

b. I often take two aspirins when I’m getting cold.

c. Drugs sometimes have a negative effect on the human body,

5.

a. Chainsaws make a great deal of noise.

b. The chainsaw is the most dangerous tool that can be operated without a permit.

c. All chainsaws now have a chain brake to reduce bucking.

Exercise 3. Improve the following topic sentences. Remember to limit your topic and controlling idea (be specific).

Exercise 4. Write a clear topic sentence about each of the topics. Remember, the topic sentence is a complete sentence. It must have a subject, a verb, and a controlling idea.

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