22. The shift from offices to kitchen tables among white-collar workers in 2021 seems ________ but indeed the history of home-working suggests some surprising parallels with today.
(A) impracticable
(B) unfeasible
(C) unprecedented
(D) illusionary

(A) impracticable
If a course of action, plan, etc. is impracticable, it is impossible to do in an effective way.
（行動方案、計劃等）行不通的，不可行的
The changes to the tax system proved impracticable as they were impossible to enforce.

(B) unfeasible行不通的
→feasible
able to be made, done, or achieved
可行的；行得通的；做得到的
With the extra resources, the project now seems feasible.
It may be feasible to clone human beings, but is it ethical?

(C) unprecedented
never having happened or existed in the past
史無前例的，空前的；絕無僅有的
This century has witnessed environmental destruction on an unprecedented scale.

(D) illusionary
not real and based on illusion (= ideas or beliefs that are not true)
虛幻的
There is never a moment when the audience feels pulled out of the illusionary world.
It may be argued that the accountability of politicians is illusionary.

資料來源：劍橋辭典