单项选择题
The factory was closed down as a （）of the terribly bad management．
A.matterB.consequenceC.wholeD.rule
单项选择题 Someone is ringing the doorbell．Goand see（）．
单项选择题 A left-luggage office is a place where bags（）be left for a short time，especially at a railway station.
单项选择题 After two years' research, we now have a（）better understanding of the disease.
