VERB FORM/TENSE:
40.    Ben        a lot in his job but now, since his promotion, he doesn’t.
    a. used travel    b. used to travel    c. used to traveling           d. is used to traveling
41. Astronauts ............... in their spaceship, but they frequently work outside now. 
a. were used to stay         b. used to stay     c. were staying     d. had used to stay
42.  Jane_____ for the telephone company, but now she has a job at the post office.
   a. used to working        b. used to work         c. is used to working        d. am used to work
43. She _________ the ocean before she moved to Vancouver.
     a. had never seen          b. have never seen          c. never sees          d. is never seen
44. They went home after they ………………… their work.
     a. finish              b. have finished          c. had finished          d. were finished
45. He ____ three years in Tahiti when he was a child.
a. has spent        b. had spent          c. spent              d. spends
46.     By the time Alex finished his studies, he             in London for over eight years.
    a. has been    b. had been    c was    d. will be