Change into passive voice: They can solve this puzzle.
AThis puzzle can be solve by them.
BThis puzzle can solved by them.
CThis puzzle is solved by them.
DThis puzzle can be solved by them.
Explanation
– Modal verbs like ‘can’ use ‘can be + past participle’ in the passive.
– The object ‘this puzzle’ becomes the subject of the sentence.
– Correct: This puzzle can be solved by them.
Exam Relevance
- Topic: Voice
- Subtopic: Active and Passive Voice
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