Mr. Obama paid a visit to China in November, 2009, , needless to say, must strengthen the

发布时间：2020-08-17 01:22:00

Mr. Obama paid a visit to China in November, 2009,     , needless to say, must strengthen the Sino-US ties.
A. what
B. that
C. which
D. it

网友回答

A. what
B. that
(答案→)C. which
D. it
解析：空格前是一个句子，空后也是一个句子，所以缺少连词，这里应是非限制性定语从句，故排除ABD；which代替前面的整个句子。故选C。
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