In the United States, there are many people who come from different countries. They go to the US to find a better job and to live here permanently, they are called “immigrants”. Many Chinese, Filipino, and Mexican immigrants became migrant workers when they first arrived in the United States. Often, they had problems with the English language or no skills that they could immediately use in the new country. When a person looks at the living conditions of these workers might say that their way of life was little better than slavery. They were housed in terrible conditions and received wages far below the minimum. The migrant workers had no labour unions that could bargain for better wages, better hours, or improved working conditions. They had no money and no power with which to bargain with their employers. Employers were making fortunes by the sweat of their workers’ brows. 21. What’s the main idea of the passage? A. Immigrant workers in the US often had fulfilling lives. B. Immigrant workers in the US could be rich if they work harder. C. Immigrant workers in the US had terrible living condition. D. Immigrant workers in the US had no problem to find a well-paid job. Giúp em với ạ,em đang cần gấp