阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式。 “Why do we have to learn about these useless things?” This is what teachers have heard students complain about most {#blank#}1{#/blank#} (common). In such cases, we may tell the students such {#blank#}2{#/blank#} story:
One night, a group of herdsmen（牧民）were about to leave the campsite when there appeared a flash of bright light. They knew that God would be there, so they looked forward to {#blank#}3{#/blank#}(get) wishes from God. God {#blank#}4{#/blank#}(begin)to speak: “You have to collect along the way a number of stones. Tomorrow night, you may be very happy, but you may be very regretful.” Then God disappeared.
The herdsmen were very {#blank#}5{#/blank#}(disappoint), because they would look forward to God to bring them untold wealth or treasure, but they did not expect that God had told them to do all these meaningful things. However, in any case, after all, that was God's will. Although there {#blank#}6{#/blank#} (be) some dissatisfaction, they were still picking over some stones. {#blank#}7{#/blank#} this way, they took a day. When night fell, they stopped. All of a sudden, they found that all the stones they picked had turned into {#blank#}8{#/blank#} (diamond). They were happy, {#blank#}9{#/blank#} at the same time, they felt very sorry, and they regretted that they had not collected more stones.
Now we feel that knowledge is as useless as stones, {#blank#}10{#/blank#} may become endless wealth in the future.
