You've got a lot of e_______of teaching.It was c_______of him to leave the door unlocked.

问题描述:

You've got a lot of e_______of teaching.It was c_______of him to leave the door unlocked.
Luckily,I have a very u______boss.

experience, careless , utilitarianexperience加不加s?yes, the first gap shall be experiences.第三个填 unusual 可以吗?