In the past few decades the increasing numbers of married women taking jobs outside home have attributed to having children ______.

单项选择题A．Keep it away from heat, drafts, and humidity.B．Keep it as empty as possible.C．Wash its interior frequently.D．Set it regularly at zero degree.

填空题Although there are some modern facilities which help Mothers with housework and sometimes Fathers give a hand, working mothers are still ______.