题目

The riddle of the camel raceOnce upon a time, there lived a very cruel sultan(苏丹). This sultan ruled his kingdom with an iron fist (拳头).It was an iron fist, because he had lost one hand in a sward (剑术) fight ,the doctor fit him with an iron hand. But once a year, on his birthday, the sultan had a bit of fun. He set a challenge for some of his subjects（国民）. No one turned down (拒绝) the challenge because to do so meant many years in prison—or worse...As the sultan’s next birthday approached, everyone started getting scared. Luckily, most people had nothing to worry abo—How old_________ your brother? —He's 12.A.isB.areC.wasD.were