Day 18-2021年八年级英语暑假提升天天练之完形填空专练（15空）

Day 18 A Winter is cold and it can be 1 for animals to find food during winter. They get through winter in many 2 . Would you like to go to a 3 place for the winter? That’s 4 migratory animals do. When the weather starts to 5 cold, migratory animals like birds and butterflies fly to a warmer place, and then they come back in 6 . 7 good way to get through winter is to sleep through 8 . Many animals hide and sleep during the winter. Their body temperature drops and hearts beat(跳动) more 9 . This helps them to save their energy(能量). They do not eat. They live off their fat. They 10 when the weather gets warmer. We call this hibernation(冬眠). Snakes, frogs and 11 hibernate in winter. Many animals stay active in winter. Some animals save food in summer and autumn and eat it in winter. This is what squirrels do. Other animals 12 changes(变化) in their bodies or behavior. To keep warm, some animals grow 13 coats in winter.