19. ________the government not imposed a heavy comprehensive tax on land and
housing, the marketing of real estate might have collapsed dramatically.
(A)Had
(B)If
(C)Whether
(D)Because
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統計: A(50), B(18), C(1), D(7), E(0) #3262745
統計: A(50), B(18), C(1), D(7), E(0) #3262745