11. fly a kite 12. in the middle 13. Spring Festival 14. take a trip 15. collect stamps 16. plant trees 17. worry about 18. listen to music 19. in the gym 20. waste water
根据问句选择正确答语。
( ) 1. Who are you? ( ) 2. Where does flour come from? ( ) 3. Where are you going? ( ) 4. What can you see in the picture? ( ) 5. How do we save water?
A. First, do not waste water. B. I'm going to the sky. C.I can see some trees, some clouds and some birds. D. I'm Mr. Wind. E. Flour comes from wheat.