Miss Lucas lived in South Carolina and liked trying new things. Her father 【1】(send) her some seeds of the indigo plants (靛蓝植物). She planted some of them i【2】 February, but the indigo plants all died because of the cold weather. She did not give up. She planted 【3】 (many) seeds in April. Unluckily, worms ate the indigo 【4】(plant). Miss Lucas tried again. This time the plants grew very 【5】(good). Her father introduced a man to 【6】(she) after knowing it. The man knew how to get 【7】 indigo out of the plants. But he did not want the people in Carolina 【8】 know how to make it. He was 【9】(worry) that his own people would not get so much money from their indigo. However, Lucas watched him closely, and she finally found out h【10】 the indigo could be made. People in South Carolina became rich because of the indigo plants.