Today is Sunday. I'm going to the zoo with my friends. There are many lovely animals at the zoo. Look! The monkeys are climbing up (爬上) the trees. The bears are having a bath (洗澡) in the river. The birds are singing in the trees. There are some zebras over there. Two of them are under the tree. The giraffes are having their breakfast. Oh! The lions are roaring (吼叫) at us. ( ) 1. It's Sunday today. ( ) 2. We are at the zoo. ( ) 3. Many animals are at the zoo. ( ) 4. The giraffes are having lunch. ( ) 5. The lions are sleeping and dreaming. ( ) 6. The birds are singing.