Recently some Japanese have been trying to make conflicts with China, attempts we are con

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A. whose
B. with which
C. about which
(答案→)D. about whose
解析：考查定语从句，句意：最近一些日本人想和中国制造冲突，我们非常担心它们的意图，句子的意思是指“Recently some Japanese have been trying to make conflicts with China这件事情”的影响，attempts缺少定语，要用whose从句中使用了be concerned about的短语，effects为介词about的宾语；所以用“介词加连接代词”的形式；选D。