摘要： The milu deer is a kind of deer that common in China long ago. A. is used to be B. was used to being C. were used for being D. used to be

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The milu deer is ___ deer that ___ common in China long ago.

A.kinds of, used to be B. a kind of, used to be C.a kind of, to be used D. all kinds of , to used be

The milu deer is _ deer that _ common in China long ago.

The milu deer is ___ deer that ___ common in China long ago.