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Add commas where needed in the sentences below.
1. Dr. Perillo a nutritionist is an expert on proper eating.

2. "Students it's important to eat a well-balanced diet," she said.

3. "Yes but how do we know what the right foods are?" asked one student.

4. "First you need to look carefully at your eating habits," said Dr. Perillo.

5. "Yes you should keep a journal of the foods you eat," she said.