题目：
| 完形填空。 | ||||
| A little boy was spending his Saturday morning playing in his sandbox (儿童玩耍的沙场). He had with him his box of cars and trucks and a shiny, red plastic shovel (铲子). In the process of creating roads in the soft sand, he 1 a large rock in the middle of the sandbox. The boy dug_ around the rock, managing to 2 it from the sand. With a little bit of 3 , he pushed the rock 4 the sandbox by using his feet. When the boy got the rock to the 5 of the sandbox, 6 , he found that he couldn't 7 it up and over the little wall. 8 , the little boy pushed and dragged, but every time he 9 he had made some progress, the 10 tipped and then fell back 11 the sandbox. The little boy had tried his best, but his only 12 was to have the rock roll back, smashing his finger. Finally he burst into tears of disappointment. All the 13 the boy's father 14 from his living room window as the story continued. At the moment the tears fell, a large shadow fell across the boy and the sandbox. It was the boy's 15 . Gently but firmly he said, "Son, why didn't you use all the strength 16 that you had?" Defeated, the boy sobbed back, "But I did, Daddy, I did! I used all the strength that I had!" "No, son." 17 the father kindly. "You didn't use all the strength you had. You didn't 18 me." With that the father 19 down, picked up the rock and removed it from the sandbox. Do you have "rocks" in your life that need to be removed? Are you discovering that you don't have 20 it takes to lift them? There is one who is always available to us and willing to give us the strength we need. | ||||
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