5. I'll introduce you to the man. His support for the project is essential.
6. The dam is nearly empty. We receive our water supply from it.
7. The clerk doesn't work here any more. You asked about him.
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8. Mexico city is probably the fastest growing city in the world. Mexico city has a population
over 10 million.
9. I don't like people. People lose their tempers easily.
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10. It is the important matter. We are interested in it.
11. Many diseases are no longer dangerous today. People died of those diseases years ago.