50. It is the ability to do the job _____ matters not where you come from or what you are.
A. one B. that C. what D. it
49. The film brought the hours back to me _____ I was taken good care of in that far- away village.
A. until B that C. when D. where
48. The home improvements have taken what little there is _____ my spare time.
A. from B. in C. of D. at
47. A computer can only do _____ you have instructed it to do.
A. how B. after C. what D. when
46. _____ such heavy pollution already, it may now be too late to clean up the river.
A. Having suffered B. Suffering C. To suffer D. Suffered
45. The research is so designed that once _____ nothing can be done to change it.
A. begins B. having begun C. beginning D. begun
44. Meeting my uncle after all these years was unforgettable moment, _____ I’ll always treasure.
A. that B. it C. one D. what
43. I’d like to take my first picture _____ stands the high tower.
A. where B. which C. that D. in which
42. The headmaster of the school, together with some teachers, _____ having a discussion.
A. is B. are C. will D. were
41. _____ your test paper carefully, some mistakes can certainly be avoided, I think.
A. Having checked B. Check C. As long as you check D. While checking