Tell whether the sentence is simple, compound, or complex.

___1. We should engage in production of more food.
___2. The supply of rice is inadequate.
___3. This is the place where I grew up.
___4. The sound that you hear is made by the thresher.
___5. That man works very hard, but he cannot send his children to school.
___6. We must learn to preserve food, or our excess will spoil.
___7. This is the house that I would like to buy.
___8. The manager would like to see all work done before dark.
___9. The children have not been able to got to school since their mother died.
___10. We rose early because there was a lot of work to do.​