—Where Anna and Tony work?
— A factory. [ ]
A. is
B. does
C. do
D.are
C
Are the parents who let their child who is ______ walk in the dark alone at night considerate?
A．young enough
B．too young to
C．not old enough to
D．so young
关于电动ON/OFF闸阀断电后的说法，正确的是（）
A、全开
B、全关
C、保持原位
D、随机
