[单选题]

27． They knew that things weren't right at home．It means ．
A． Bob had no food to give them
B． Bob couldn't open the door
C． it was very cold outside
D． they were too young to eat anything

27． They knew that things weren't right at home．It means ．A． Bob had no food to give themB． Bob couldn't open the doorC． it was very cold outsideD． they were too young to eat anything