根据句意和首字母提示完成下列句子。 1. They can see many l _____ on the tree in summer. 2. Class begins! Please be q______. 3. A koala usually r _____ ten hours every day. 4. Elephants like to eat g______. Rabbits like it, too. 5. The lion is very l ______ . He usually sleeps 20 hours every day.