【简答题】O2O英文全称是( ),中文意思是指( )
【简答题】When he heard the news that his father died, he stood ___________________(好像被钉在地上一样).
【单选题】The younger policeman was leaning ______ the wall with his arms folded when he heard someone for help.
【单选题】When he heard from the hospital that his father had died, he ______into tears.
【简答题】His face______(dark)with anger when he heard the bad news.