b) Now complete the sentences.

Решение:

• 1. Cahokia is near ... the Mississippi River. (Based on the text: "Cahokia is an ancient village close to the Mississippi River").
• 2. The Mississippians built ... big mounds of earth in the shape of pyramids. (Based on the text: "The Mississippian people who lived in Cahokia built big mounds of earth in the shape of pyramids.").
• 3. To tell the time, they ... used wooden poles and the sun. (Based on the text: "The Mississippians even made a calendar; they used wooden poles and the sun to tell the time.").
• 4. They played ... a game called 'chunkey'. (Based on the text: "Their favourite game was called 'chunkey'.").
• 5. The Mississippians ate ... crops like corn and tomatoes, and hunted animals. (Based on the text: "They grew crops like corn and tomatoes and hunted animals for food.").
• 6. No one knows why the people ... left Cahokia. (Based on the text: "Then suddenly, all of the people left Cahokia and no one knows why.").
• 7. A possible reason is that ... there was no food. (Based on the text: "but some people say they left the city because there was no food.").