a. 尽职的, 忠实的, 顺从的, 守本分的

duty/dutiful/job/work/occupation/task/obligation/burden/burdensome
记忆：
1. duty [ 5dju:ti ] n. 义务, 责任, 税 Some goods are free of duty.一些商品是免税的。
2. dutiful [ 5dju:tiful] adj. 忠实的, 顺从的, 守本分的 The father is a dutiful man.父亲是个本分人。
3. job [ dVCb] n. 工作（可数名词）, 零活 What a good job you have done!你干的好事！
4. work [ wE:k ] n. 工作（不可数名词）, 劳动 n. (使)工作, (使)运转, 起作用 Work is more important than your computer game. Don’t you think so?工作比你的电脑游戏更重要，不是吗？ work for sb 为……工作，效力 work as sb担任 work on sth从事于 work at sth干，计算 work out计算出，制定出 work the machine操作机器 work (vi) 起作用 格言：Work makes the workman.勤工出巧匠。
5. occupation [ 7Ckju5peiFEn] occupy, 占有；occupation, n. 职业, 占有 Have you found out his occupation?你还没有查出他的职业吗？
6. task [ tB:sk ] ask, 问，要求；task, 问的作业，要求的任务；n.任务, 作业 It’s too heavy a task for a boy at his age.对他那个年龄来说，那个任务太沉重了。
7. obligation [ 7Cbli5^eiFEn ] oblige, vt.迫使, 责成 obligation n. 义务, 职责, 债务 Love means obligation more than passion.爱是激情，更是责任。
8. burden [ 5bE:dn] n. 担子, 负担 A donkey can carry a heavy burden. 驴子可以负荷很沉的担子。
9. burdensome [ 5bE:dnsEm] adj. 繁重的, 烦累的, 难以承担的 They used to find the taxes burdensome. 他们曾经觉得赋税收很重。
另类阅读：
He is looking for a job of little duty with high pay. He has ever worked as a manager. However, he found the occupation full of heavy obligations, so he gave it up.