Richard was called in by the police to answer questions the disappearance of Thomas Ripley, whose relatives were so his present situation.
A. concerning; concerned about
B. concerned; worrying about
C. with regards to; concerned
D. regarding; concerning about
网友回答
(答案→)A. concerning; concerned about
B. concerned; worrying about
C. with regards to; concerned
D. regarding; concerning about
解析：第一空考查concerning 为介词，关于，第二空短语：be concerned about 对什么关心，所以选A。