A lot of questions at the meeting, which made things more plicated(复杂的).
A. came across
B. came up with
C. came up
D. came in
网友回答
A. came across
B. came up with
(答案→)C. came up
D. came in
解析：
考查词组辨析，came across遇到，came up with及物动词短语，想出，提出came up不及物动词词组，被想出，被提出，came in进来，分析句子可知，很多问题在会议上被提出，这使得情况更糟糕。需要不及物动词词组。故选C。