问题
选择题
The Adventures of Huckleberry Finn, _______ the USA in the mid 19th century, _______ a masterpiece.
A．set in; proves
B．setting in; is proved
C．is set in; proves
D．was set in; is proved
答案
答案：A
A be set in以……为背景，这里用过去分词作定语，修饰The Adventures of Huckleberry Finn，prove证明是，是系动词没有被动语态，因此A项正确。