1. whan there is thunderstorm, it must/might have been very hot and humid.2. if you see lightning and hear thunder at just about the same moment, storm cant/ must be far from you.3. sometimes when you dont see any flashes of lightning, but the sky lights up from time to time, storm may/must be very
far away4. floods can/may occur after heavy rain, cyclone, zsnow melting, or can/may be caused by tsynami.5. floods can/cant be caused by tornado.6. flash floods and tornadoes can/cant occur during any month of the year.

West Asian and African elephants live in the jungle. Some of the animals work for people because they can lift and carry heavy objects. All elephants have endurance for walking long distances, but not for running. In eastern and southern Africa is often their usual pastures dry up for months. Elephants have long way to go before they find grass and water. Hungry elephants can walk more than 30 kilometers in one day. They never forget the place where there is water. They can drink about 200 liters of water every day and eat 100 kilograms of food

West Asian and African elephants live in the jungle. Some of the animals work for people because they can lift and carry heavy objects. All elephants have endurance for walking long distances, but not for running. In eastern and southern Africa is often their usual pastures dry up for months. Elephants have long way to go before they find grass and water. Hungry elephants can walk more than 30 kilometers in one day. They never forget the place where there is water. They can drink about 200 liters of water every day and eat 100 kilograms of food.