⑩为（）A.doingB.operatingC.laboringD.functioning

单项选择题

The money and the time we spend on pets is simply not our own to spend as we like in a time of widespread want and starvation. A（①）organization advertises that for $33 a month they can give hospital care to a child suffering from kwashiorkor-the severe deficiency disease（②）is simply a starving for protein. Doing（③）such a pet, and then sending the money saved to a relief organization would mean（④）a life-over the years, several human lives.
Children not（⑤）from such a grave disease could be fed with half that amount-not on a diet like ours, but on plain, basic, life-sustaining food. It is not unreasonable to believe（⑥）the amount of money we spend on the average pet dog could keep a child（⑦）in a region of great poverty. （⑧）what we would spend on a cat might not feed a child, but it（⑨）probably pay for his medical care or basic education. The point needs no（⑩）.hat is all that need be said.

⑩为（）

A.doing
B.operating
C.laboring
D.functioning