OG verbal 分册 19. The personal income tax did not become permanent in the United States until the First World War; before that time the federal government was dependent on tariffs to be their main source of revenue.
A)the federal government was dependent on tariffs to be their main source of revenue
B)the federal government had dependent on tariffs as its main source of revenue
C)tariffs were what the federal government was dependent on to be its main source of revenue
D)the main source of revenue for the federal government was dependent on tariffs
E)for the main source of revenue ,tariffs were dependent on by the federal government
OG 对错误选项 D的解释只有:source as the subject of the verb was is nonsensical.
表示不能理解。。。望打击一下我这个chinglish的思路
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