48. Mary is 18 years old this year; she ____19 next year.
A. will be B. is to be C. is going to be D. should be
49.Though it was late in the night,____ he continued to work vigorously.
A. but B. yet C. and D. that
50. The doctor advised him to stay in bed, saying he was much____.
A. ill enough B. too ill C. so ill D. very ill
51. I was ____ study French yesterday, but I changed my mind.
A. to be starting B. to start
C. to have started D. to have been starting
52. You’d rather go to theater with him this evening, ____?
A. are you B. hadn’t you C. isn’t it D. wouldn’t you
53. ____that the formation of the sun, the planets, and other stars began with the condensation of an interstellar gas cloud.
A. It is believed B. Believing C. Being believed
D. To believe
54. One of the most spectacular qualities of man is notably his____
to any kind of natural environment.
A. tendency B. adoptability C. adaptability
D. availability
55. I’m in no____now to go to concert with you.
A. mood B. intention C. emotion D. sense