Recently some Japanese have been trying to make conflicts with China, effects we are greatly concerned.
A. to whose
B. about whose
C. to which
D. about which
网友回答
A. to whose
(答案→)B. about whose
C. to which
D. about which
解析：句意：现在一些日本人试图和中国制造冲突，关于他们的影响，我们会密切关注。通过分析句子结构，可知这个句子中包含一个非限制性定语从句，“关于”要用介词about，且关系词在从句中作定语，故用关系代词whose，选B。