Select the sentence that correctly transforms the given active voice into passive voice: "People believe that the scientist discovered a rare element."
The scientist is believed to have discovered a rare element.
When a sentence reports belief about a completed action using "that" clause with a past tense verb, the passive transformation uses the pattern "subject + is/are believed + to have + past participle."
Here, "the scientist discovered a rare element" is the completed action believed by people, so the correct passive form is "The scientist is believed to have discovered a rare element," which preserves the sense that the discovery happened before the belief is stated.
"The scientist is believed to discover a rare element" incorrectly uses the simple infinitive, losing the sense of a completed past action, while "was believed discovering" is grammatically malformed, and the first option reverses the subject and object incorrectly.
Therefore, the correct answer is "The scientist is believed to have discovered a rare element."
Select the sentence that correctly changes the active sentence into passive voice:
"The manager made the employees work overtime."
Select the sentence that correctly changes the active sentence into passive voice:
"Someone has stolen all the confidential files from the office."
Select the option that expresses the given sentence in passive voice.
The Smiths have put up a huge Christmas tree.
Select the correct passive form of the given sentence.
Conduct all the exams in a fair and proper manner.
Directions: Select the correct passive form of the given sentence.
The masons are building the house.
Directions: Select the correct active form of the given sentence.
By whom has this mischief been done?
Select the correct active form of the given sentence.
By whom were you pushed into the mud?