问题描述：
On the ground _____which had gone into the cave to die
A.an old sick goat lying
B.lay an old sick goat
C.lying an old sick goat
D.an old sick goat lay
A.an old sick goat lying
B.lay an old sick goat
C.lying an old sick goat
D.an old sick goat lay
问题解答：
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