What kind of verb we should use after some uncountable nouns separated by commas as the subject of our sentence? In the following example do we need is or are?
I want you to know how much your effort, time, and work are/is appreciated.
I want you to know how much your effort, time, and work are/is appreciated.
You have three (uncountable) items. Any one, by itself, would take is:
I want you to know how much your effort is appreciated.
I want you to know how much your time is appreciated.
I want you to know how much your work is appreciated.
Joining them with or would also take an is (but would not make sense).
Joining them with an and means that these three things are appreciated
I want you to know how much your effort, time, and work are appreciated.
