10. My children are lucky_____________ the chance to visit the capital again. A. have B. having C. are having D. to have 11. The children enjoy______________ with their friends through computers. A. to chat B. chat C. chatting D. chatted 12. Her father used to_______________ abroad for his business. A. travelling B. travelled C. travel D. is travelling 13. The kids_____________ that show before. A. didn’t see B. don’t see C. aren’t seeing D. haven’t seen 14. How often______________ you______________ sports? –Twice a week. A. did-play B. have-waited C. do-play D. did-played 15. How long_______________ you_____________ for me?-For an hour. A. did-waited B. do-wait C. have-waited D. have-wait 16. Since the worldwide recession of the 1990’s, the sail of jeans __________ growing. A. stopped B. was stopped C. was stopping D. has stopped 17. Tidal waves_______________ the result of an abrupt shift in the underwater movement of the Earth. A. are B. were C. is D. was 18. How long ago................. Susan? A. have you been seeing B. you saw C. did you see D. would you see 19. On the first of next month, he ............... in prison for five years. A. will have B. will be being C. will have been D. has had 20. He .............. for a job for some weeks before he found one. A. is looking B. looks C. would have been looking D. had been looking