Richardwascalledinbythepolicetoanswerquestions

問題詳情：

 Richard was called in by the police to answer questions ______ the disappearance of Thomas Ripley, whose relatives were so ______ his present situation.

A. regarding; concerning about                                   B. concerned; worrying about

C. including; concerned about                                   D. concerning; concerned about

【回答】

D

知識點：形容詞

題型：選擇題