问题补充:
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. set in; proves
B. setting in; is proved
C. is set in; proves
D. was set in; is proved
解析:
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。