Change into passive voice: They must inform the authorities immediately.
AThe authorities are informed immediately.
BThe authorities must informed immediately.
CThe authorities must be inform immediately.
DThe authorities must be informed immediately.
Explanation
– Modal verbs like ‘must’ use ‘must be + past participle’ in the passive.
– The object ‘the authorities’ becomes the subject of the sentence.
– Correct: The authorities must be informed immediately.
Exam Relevance
- Topic: Voice
- Subtopic: Active and Passive Voice
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