What does this set of words have in common—a straight road, a brilliant idea, hard work, no problem, extremely grateful?
(A) compounds
(B) antonyms
(C) collocations
(D) synonyms
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統計: A(21), B(4), C(59), D(10), E(0) #239468
統計: A(21), B(4), C(59), D(10), E(0) #239468