Who VS whom

Rationale:
The answer is in the answer
Who is for he
Whom is for him
Who is for she
Whom is for her
Who is for they
Whom is for them
Who is for we
Whom is for us
For whom the bell tolls?
(it tolls for them.. or for him)
Who tolls the bell?
(he does.. or they do)
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לקבוע שיחות טלפון באנגלית תקשורתית