阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

When a man was walking by some elephants, he 【小题1】 (sudden) stopped. He was puzzled that these huge animals were being held only by a small rope(绳子) tied to their front legs. No chains, no cages. 【小题2】 was obvious that the elephants could break 【小题3】 (they) bonds at any time, but for some reason, they did not.

He saw a trainer nearby and 【小题4】 (ask) why the animals just stood there and made no attempt to get away. “Well,” the trainer said, “when they were very young and much smaller, we used 【小题5】 same rope to keep them from 【小题6】 (run) away. At the age, it’s enough to hold them. As they grow up, they are used to believing they cannot break the rope. They believe it can still hold them, so they never try【小题7】 (break) free.”

The man was 【小题8】 (amaze). These animals could break free whenever they wanted, but because they believed they couldn’t, they were stuck right in the place【小题9】 they were.

How many of us go through life like the elephants — holding onto the belief that we cannot do something simply because we failed at it once before?

Failure is a part of learning. 【小题10】 we failed once, it doesn’t mean we can never succeed. We should never give up trying when we encounter failures in life.