In all his life, Dickens wrote a large number of excellent novels in the 19th century, so

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A. whose
B. of that
C. in which
(答案→)D. of which
解析：句意：--在他的一生中，19世纪Dickens写了大量优秀的小说，其中一些仍然现在受欢迎。这里使用了定语从句，先行词是excellent novels，定语从句中缺少的是of the excellent novels，所以用of which引导定语从句，选D。