已知一组数据:8,6,10,13,15,8,7,10,11,12,10,8,9,11,9,12,10,12,11,9。如果取组距为2,这组数据应分( )组。
5
—How soon ______ all the work ______?
—In a week.
A.will…finish
B.is...going to finish
C.will…be finished
D.are…going to be finished
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