Though small talk, Roy managed to have lively conversation with strangers.
A. lacked
B. lacking of
C. lacking
D. lacked in
网友回答
A. lacked
B. lacking of
(答案→)C. lacking
D. lacked in
解析：句意：虽然缺少人闲聊，Roy设法和陌生人进行生动活泼的交谈。Roy和lack是主动关系，用现在分词做状语，注意lack of里面的lack是名词，不能接ing，选C。