基础闯关全练。  

1. He is a c_________ boy. He is good at math.  

2. Wang Xia walks into the classroom with b_________ flowers in her hand.  

3. What an u_________ dress !  I don't like it.  

4. Don't be s_________. Come and say hello to everyone.  

5. Koalas come from A_________.  

6. Lucy is a s_________ girl. All the teachers like her.  

7. Tigers and lions are s_________. They often eat other animals.  

8. He is l_________. He doesn't want to wash his clothes.