单选题 She tried her best to ______ the trouble.
A. keep on B. keep back C. keep out of D. keep down

【正确答案】 C
【答案解析】[解析] 该题考查动词词组的辨析。keep on表示“继续”;keep back表示“阻止,保持距离”;keep out of表示“不卷入,不牵扯”;keep down表示“躲避,蹲下”。