| 1 | Cement is a very important building material. | |
| 2 | The company is one of the largest cement producers in the country. | |
| 3 | The walls of this building are made with high-quality cement. | |
| 4 | Cement is made from materials such as limestone, clay, and gypsum. | |
| 5 | Different types of cement have various uses for different building projects. |
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