题目

It＿＿＿＿to look after these naughty grandchildren of mine for a whole day.A. put me down  B. drives me out         C. wears me out  D. pulls me through 答案：C（2012•本溪）在一组数据-1，1，2，2，3，-1，4中，众数是-1与2-1与2．