You can exercise your imagination, but these exercises must be done in accordance with the requirements ______ in the instructions.
A. set down
B. set up
C. set about
D. set off
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An unlimited arms race ______ well increase the danger of war.
A. may
B. can
C. must
D. will
In a(n) ______ universe filled with stars, every line of sight should eventually meet the surface of a star.
A. eternal
B. infinite
C. ceaseless
D. everlasting
They were both glad to have gotten through the divorce proceedings without any visible signs of ______.
A. hostility
B. hospitality
C. humidity
D. humanity
I was to have finished the writing if ______.
A. nobody called me away
B. nobody would have called me away
C. I had not been called away
D. I was not called away