+0
(1)I'm confused which vitamins should be taken
(2)I'm confused which vitamins should be taking.
what is the difference between 'taken and taking' sentences above?
Thanks forf explaination.
+0
(1) is correct.
For (2) to be correct, you would need a subject: which vitamins I should be taking.
+0
Evo25(1)I'm confused which vitamins should be taken.
(2)I'm confused which vitamins should be taking.
HI,

(2) is ungrammatical. It needs to be "I'm confused which vitamins I should be taking."

"Vitamins should be taken," is passive voice. "Vitamins" is the subject.

"I should be taking," is active voice. "I should be taking which." "I" is the subject of the clause.

Edit. The shortened sentences are for demonstration.
Students: Are you brave enough to let our tutors analyse your pronunciation?
Comments  

proper corrective actions should be taken or

proper corrective actions should be taking

Teachers: We supply a list of EFL job vacancies

First, which is your choice, please?

Have you taking the training for PPS approval