There 56 a king who had twelve beautiful daughters. They 57 in twelve beds all in one room

and when they went to bed， the 58 were shut and locked up. 59 ， every morning 60 shoes were found to be quite worn through as if they had been danced in all night. Nobody could 61 how it happened， or 62 the princesses had been. So the king made it 63 to all that if any person could discover the 64 and find out where it was that the princesses danced in the 65 ， he would have the 66 he liked best to take as his wife， and would be king 67 his death. But whoever tried and did not succeed， after three days and nights， would be 68 to death. A prince from a nearby country soon came. He was well entertained， and in the evening was taken to the chamber （大房间） next 69 the one where the princesses lay in their twelve 70 . There he was to sit and 71 where they went to dance; and， in order 72 nothing could happen without him hearing it， the door of his 73 was left open. But the prince soon went to sleep; and when he 74 in the morning he found that the princesses had all been dancing， 75 the soles of their shoes were full of holes.根据以上内容，回答题。

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A.was

B.were

C.is

D.are