第27题: [单项选择]The building around the corner caught fire last night. The police are now ______ the matter. A. seeing through B. working out C. looking into D. watching over 参考答案:C 答案解析:[考点] 词组辨析 [解析] see through是“看穿”的意思;work out是“解决(问题),计算出”的意思;lock into是“观察,调查”的意思;watch over是“看守