英语选词填空might lie trees have crops possibly must knowIt is cal

英语选词填空
might lie trees have crops possibly must know
It is called Stonehenge(n.巨石阵).It _______ on the Salisbury Plain,England.There are no _______ around it.Yet no one ________ who,how or why of its origin(n.起源）.It _______ be a temple of the sun.It could also be a market.Maybe it was a cathedral.Or it was ________ a city of the dead.
But everyone agrees that it _______ be used to predict the positions of the moon and the sun and the seasons as well,just like a computer.It was useful for the planting of _______.