11.During the festival, they fly many __________ kites in different shapes and sizes. A. colour B. colourless C. colourful D. colouring 12. While I …………the performance, I met one of my old friends. A. watched B. was watching C. watch D. am watching 13. The ……………….… of quan ho singing has been recognized as a world heritage. A. preservation B. procession C. song D. performance 14. Lang Lieu couldn’t buy any special food………..he was very poor. A. although B. when C. while D. because 15. The girl was crying when a fairy…………… A. appears B. was appearing C. appeared D. is appearing 16. While we were watching a film, she……………. A.arrive B. was arriving C. was arrive D. arrived 17. She told me a story ______ I found hard to believe. A. what B. which C. in which D. at which 18.She is famous_________her intelligence. She designs many social styles. A. in B. for C. with D. into