38. The whale oil was once a lucrative and much ___________ commodity used in lamps to light homes.
(A) desire
(B) desired
(C) desiring
(D) desirably
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統計: A(17), B(230), C(97), D(26), E(0) #1780133
統計: A(17), B(230), C(97), D(26), E(0) #1780133