There _____ a lot of red-crowned cranes in this area.There _____ a lot of red-crowned cranes in this area.A.was used to B.was used to be C.used to be 选出来过后说一下理由,不会请不要乱讲,

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There _____ a lot of red-crowned cranes in this area.There _____ a lot of red-crowned cranes in this area.A.was used to B.was used to be C.used to be 选出来过后说一下理由,不会请不要乱讲,
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There _____ a lot of red-crowned cranes in this area.There _____ a lot of red-crowned cranes in this area.A.was used to B.was used to be C.used to be 选出来过后说一下理由,不会请不要乱讲,
There _____ a lot of red-crowned cranes in this area.
There _____ a lot of red-crowned cranes in this area.
A.was used to B.was used to be C.used to be
选出来过后说一下理由,不会请不要乱讲,

There _____ a lot of red-crowned cranes in this area.There _____ a lot of red-crowned cranes in this area.A.was used to B.was used to be C.used to be 选出来过后说一下理由,不会请不要乱讲,
答案选C
过去曾经有……
A被用来做,后面接不定式；或习惯于,后面接名词或动名词的.
B被用来是……（一般没有这个结构的）

C

used to + 动词原形 “过去常常”



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祝学习进步

这里有很多丹顶鹤
C
used to be=have

选C
A先是错误to不能直接加名词
B总是惯于做某事
句子不通啊
C就对了

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