Our teacher punished Tom for his being late for school last month. ______, Tom gets up early every day and is never late again.
A.Now and then
B.From then on
C.Till then
D.Just then
网友回答
B解析短语辨析。A时而不时；B从那时起；C知道那时；D就在那时；句意：我们老师上个月因为迟到处罚了TOM。从那时起，他很早就起床再也不迟到了。