在未给提示词的空白处仅填写1个适当的单词，在给出提示词的空白处用括号内所给词的正确形式填空。

Jobs and occupations come and go at an 【小题1】 (amaze) pace these days. If you think you can’t be replaced by software, or your job can’t be outsourced to some robots on the moon, you are wrong. What if your job disappears after working for 10 years in the field? You may have to go back to the classroom and 【小题2】 (retrain) in order to qualify to work in another field. In fact, in all likelihood, you will have to do this multiple times. But you can be prepared for developments and changes before you are thrown out of a career. It is 【小题3】 (entire) your choice to learn, or to be forced to learn.