https://online2.tingclass.net/lesson/shi0529/0001/1240/17-04.mp3
https://image.tingclass.net/statics/js/2012
1. His employers could not complain about his work because he was ______ in the performance of his duties.
A. derelict B. penetrating C. diversified D. assiduous.
<employer>
employer 雇主，老板
employee 雇員
</employer>
<assiduous>
assiduous 勤奮的
insidious 陰險的，狡詐的
</assiduous>
<derelict>
derelict 遺棄物
relics 遺骨
relict 殘余物
</derelict>
<penetrate>
penetrate 穿透
permeate 滲透
diffuse 彌漫
diversify 使不同
</penetrate>
