223. Thomas Edison, who found collaboration essential, never fit the popular stereotype of the ______ inventor, struggling alone in a garret.
A. surly
B. cowardly
C. solitary
D. weary
E. suspicious
224. Claudia is so adept at controlling her temper that she can seem quite ______ when she is actually ______ .
A. perturbed, furious
B. placid, outraged
C. serene, tranquil
D. stoic, ebullient
E. ambivalent, reticent