Choose the correct passive voice transformation of the sentence:
The archaeologists, after many years of searching, have discovered a hidden ancient tomb.
Show answer & explanation
Correct answer: B
Explanation
The original sentence, 'The archaeologists, after many years of searching, have discovered a hidden ancient tomb,' is in the present perfect tense (have discovered). When transforming an active voice sentence in the present perfect tense into the passive voice, the structure 'has/have been + past participle' is used.