45. Musk is the man __________ created the self-driving car and may take us to Mars.

A. where

B. whom

C. whose

D. that

46. She loves ducks, __________?

A. doesn't she

B. isn't she

C. didn't she

D. hasn't she

47. Louis _________ in Canada for twenty-one years.

A. has lived

B. have lived

C. has been lived

D. have been lived