9. B. arrived -> arrive ( see someone V1 )
10. C. showing -> show ( to V1 )
11. A. to jump -> jump
12. A. suggested to take -> suggested taking ( suggest + Ving )
13. B. helped -> to be helped ( được giúp đỡ )
14. D. attraction : sự thu hút
15. B. to ( loyal to : trung thành )
16. D. wear uniforms -> wearing uniforms ( like + Ving )
17. D. will move ( câu điều kiện loại 1)
18. D. speak it -> speaking it ( practise + Ving )
19. D. at -> on ( based on : dựa trên )
