Once there was a wise king. He had two sons. Every day, many famous teachers taught {#blank#}1{#/blank#} (they) knowledge. One day, the king was {#blank#}2{#/blank#} (bad) ill, so he wanted one of his sons {#blank#}3{#/blank#} (be) the new king. He wanted to test his sons' {#blank#}4{#/blank#} (ability).

    He called {#blank#}5{#/blank#} of them and gave each of them a room. "You must fill this room completely {#blank#}6{#/blank#} anything you like. But there should be no space left and don't ask anyone for advice!"

    The next day the king visited the elder son's room. The room was completely filled with hay(干草). The king sighed and {#blank#}7{#/blank#} (feel) sad. Then he went to the {#blank#}8{#/blank#} (young) son's room, but it was kept closed. The king knocked at the door of the room. The younger son asked his father to get in and closed the door again. It was so dark that the king shouted at his son {#blank#}9{#/blank#} (angry). But the younger son lighted a candle and said, "I have filled this room with light!"

    Now the king felt very happy and hugged his son proudly. He understood that the younger son would be the right person to {#blank#}10{#/blank#} (ruler) the kingdom after him.