1. My son failed to come back home last night. This morning the police came to our house and ( ) my worst fears that he was injured in a car accident.

　　A. Advocated

　　B. confirmed

　　C. promised

　　D. insured

　　【答案】B。考查动词词义辨析。A项意为提倡，拥护，辩护;B项意味确认，确定，证实;C项意为承诺，允诺;D项意为保证;根据句意“我儿子昨晚没能回家。今天早上警察来我家XX了我最担心的事情，他在车祸中受伤了。通过代入四个选项，可知B项符合句意，故此题选择B项。