Respuesta :
A sentence is in passive voice when the subject is acted upon by the verb.
The sentence in passive voice is B - convenience and efficiency have been delivered by the telephone.
In active voice this sentence would be: The telephone has delivered convenience and efficiency, wherein the subject (the telephone) is doing the action (delivering convenience and efficiency).
The sentence in passive voice is B - convenience and efficiency have been delivered by the telephone.
In active voice this sentence would be: The telephone has delivered convenience and efficiency, wherein the subject (the telephone) is doing the action (delivering convenience and efficiency).
The passive sentence is
→ B. Convenience and efficiency have been delivered by the telephone
This sentence uses present perfect tense
✐ formula past simple
(+) O + has/have + been + Verb 3 (by S)
(-) O + has/have + not + been +Verb 3 (by S)
(?) has/have + O + been + Verb 3 (by S)?
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Subject : English
Keywords : Passive Voice, Present Perfect
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