Type the whole sentence using the verb from the brackets in the right form of Passive Voice. Since then the Kremlin ___________ (rebuild) with stones.

The sentence requires us to use the verb 'rebuild' in the passive voice. Since the sentence starts with 'Since then', which implies a past action with continuing relevance, the present perfect passive tense is appropriate.

The correct sentence is:

Since then the Kremlin has been rebuilt with stones.