Select the option that expresses the given sentence in passive voice.
They have built a new bridge across the river.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. A new bridge has been built across the river by them.
The action is being performed on the object "a new bridge", so it becomes the subject in the passive voice.
By them is added to indicate who performed the action.
In passive voice, the verb must retain the same tense that is present perfect tense here.
The formula for Present Perfect Passive: has/have + been + past participle of the main verb
Have built is changed to has been built since 'a new bridge' is singular.
Hence, the marked option is the correct answer.