完形填空。
阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。
I was successful at my job. I worked very hard , but it ___1___ me and my family a fabulous (极好的) lifestyle. I’d worked for the same company for twenty years and had worked my way up to department director. ___2___, one afternoon last May, I was called to the office, and it was _3_ explained to me that they were letting me go. I just sat there _4_ they talked on and all I could think was, “I’ve ___5__.” I’d been so well respected; __6__ I was of no value.
