Professor Markham's theory falls to explain th
问题详情
Professor Markham"s theory falls to explain the extent to which savings from personal income has shifted to short-term bonds, money-market funds, and other near-term investments by the instability in the futures market.
A．to which savings from personal income has shifted
B．of savings from personal income that has been shifted
C．of savings from personal income shifting
D．to which savings from personal income have shifted
E．to which savings from personal income have been shifted
参考答案
正确答案：E
解析：A and D both incorrectly use the active voice for "has/have," which does not work with the phrase "by the instability" later in the sentence; A also incorrectly uses the singular form. "has" for the plural noun "savings." B makes the same error in number, and C also uses the active voice. The construction "explain the extent of savings" in B and C is less idiomatic than the construction "explain the extent to which savings" in E. E provides the clearest and most idiomatic statement.
