| 完形填空. | ||||
| Once (从前) a man __1__ to go __2__ a river in a boat. He __3__ a sheep, a wolf (狼) and a basket of vegetables with him. But he could take only one of them __4__ him at a time (一次) __5__ the boat was too __6__. "If I __7__ the wolf and the sheep together (一起), the wolf may eat the sheep," he thought. "If I leave the sheep and the vegetables together, the sheep may eat the vegetables." He thought and thought. At last, he had an __8__. And he could go across the rive with the sheep, the wolf and the vegetables. Do you __9__ how he __10__ across the river? | ||||
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