问题
选择题
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
答案
答案：A
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。