(6-20). Choose the word or phrase (a, b, c or d) that best fits the blank space in each sentence. 6. Those boys are addicted a. on b. for 7. They will finish the work a. on b. over 8. The design and material used for men were different a. at computer games. c. to d. with schedule. c. in d. out b. from c. with Iwe won't be late. those used for women. d. in b. because c. although d. otherwise available? c. are becoming d. will become d. preventing 9. We have to start early a. so that 10. Will you buy an electric car when they b. became 11. Everybody must take part in a. become a. protecting b. preserving 12. Neil Armstrong, a. who b. that deforestation. c. controlling first walked in the moon, lived in the USA. c. whom 13. Baird produced the first TV picture in 1926, b. wasn't he 14. Traditionally, the ao dai a. didn't he a. frequently wore c. worn frequently 15. We d. whose ? c. doesn't he d. hasn't he by both men and women. b. was frequent worn d. was frequently worn wear helmets in order to keep the traffic law and protect ourselves. a. may 16. She asked me if I a. speak b. can d. need c. should c. can speak d. would speak _ any other language. b. spoke