Bobyoureabsent的精选

问题详情：―Bob,you'reabsent-minded!―Oh,I'msorryI________attentiontoyou,MissShute.A.haven'tpaid        B.wasn'tpaying  C.amnotpaying   D.couldn'thavepaid【回答】B解析：时态题，刚才走神了...