Question

Choose the correct passive voice for the following sentence: No one could open the lock.

Option 1:
The lock could not open

Option 2:
The lock was not opened

Option 3:
The lock cannot be opened

Option 4:
The lock could not be opened

Answer 1

The correct passive voice for the following sentence will be:

The lock could not be opened.

Rules we need to keep in my mind when changing an active voice sentence to a passive voice sentence:

• The object in an active voice sentence will be the subject in a passive voice sentence.
• The verb 'to be' should always be used in the same tense when converting an active voice sentence to a passive voice sentence.
• However, we need to use the past participle form of the main verb when changing active voice sentence to a passive voice sentence.