Every year one million tourists visit Stonehenge, which is believed __________ (修建) before the Pyramids, about 4, 000 years ago. (construct)
My bicycle isn't where I put it. Who __________ (可能移动) it? (move)
On the wall is a blackboard __________ (上面写着) some words, "It is no use sitting here without listening to me." (write)
Medical researchers have painfully realized that there are many problems to __________ (他们没有找到) any solution so far. (find)
It is possible that the King of Stonehenge was linked to the stones: he __________ (可能参与) in planning the monument, or in helping transport and pull up the stones. (hand)