7 Restoration work on the castle ____________ (not/complete) yet.

Passive Voice Explanation

The word 'yet' indicates that the action has not happened up to the present moment, but it might happen in the future. This suggests the use of the present perfect passive.

Solution:

The structure for the present perfect passive is 'has/have' + 'been' + past participle.

• The verb is 'complete'.
• The past participle of 'complete' is 'completed'.
• The subject is 'Restoration work' (singular, treated as a mass noun).
• Since it is negative ('not') and uses 'yet', we use 'has not been'.

Therefore, the correct passive form is 'has not been completed'.

Answer: has not been completed