题目

                     答案：原式=×（﹣）﹣×（﹣）﹣×（﹣）﹣ =﹣2+1+﹣=﹣1﹣2=﹣3．With so many hungry children seated round the table, the food disappeared ______.A.in timeB.at a timeC.in no time D.on time