He wrote a lot of novels, regarded as masterpieces.
A. dozens of them
B. dozens of which
C. a dozen of which
D. dozen of that
网友回答
A. dozens of them
(答案→)B. dozens of which
C. a dozen of which
D. dozen of that
解析：dozen“十二”，hundred，thousand等前用数字修饰时不用复数，且不与of连用，排除C、D；泛指“几十”，“几百”等时可以与of连用，例：dozens of...“几十个......”。句中有逗号，是非限制性定语从句，故选B。选A的话，应该在A前面加and。故选B。