17. I _____in the same company since I left school. a. work b. worked c. have worked d. had worked 18. Greeting cards are big business in Britain.
17. I _____in the same company since I left school. a. work b. worked c. have worked d. had worked 18. Greeting cards are big business in Britain. Millions of cards_____ every year. a. is sent b. are sent c. have been sent d. has been sent 19. It was careless_____ not to lock the … Đọc tiếp