21. You mustn’t take the library books away without p_____________.

20. There are some m____________ in the tree.

19. The box is so heavy that I can’t l____________ it.

18. The boy showed me four f____________ to tell me he was four years old.

17. He u__________ up all the money his father left for him.

16. Don’t throw g__________ everywhere. We must keep the park clean.

15. The boy is d_______________.Don’t believe him.

14. Children like to watch a___________ move food.

13. Look ! The birds are flying in line in the s_____________.

12.You’d better get up early if you want to c_____________ the early bus.