A natural disaster that often happens in Viet Nam is floods. Floods often happen in the rainy season. They usually occur from August to October every year. Floods are common in the central part of Viet Nam. They make roads flooded and houses damaged. Many people lose crops and animals. Before floods, people should prepare food and clean water. They should listen to the weather news carefully. After floods, people clean their houses and they have each other. Floods are dangerous, but if we prepare well , we can stay safe.

1. He asked the villagers how often earthquakes occurred in that region.

2. They told me I could find a wide range of beauty products in their store.

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1.The boys said they were picking up litter on the beach then.

2.Before Lucas arrives at the restaurant, we won't order our meals.

1.During a flood, you should listen to instructions from local authorities.

2.Mars is one of the most promising planets for life in the solar system.