Since the end of the war, the Government _________ over five thousand of prisoners.
have been released
has been released
Answer C – verb tense question
Since + timeline in the past is a sign indicating the present perfect, so answer B is eliminated.
“The Government” is a singular subject, so the answer A – have released (plural) is also eliminated.
Verb release is a transitive verb, in this sentence, there is a noun phrase “over five thousand of prisoners” as an object, so the verb release must be conjugated in the active form, so answer D is eliminated. And answer C is correct.
=> Since the end of the war, the government has released more than 5 thousand prisoners.