Question

Present perfect vs past perfect. Rewrite sentences (the active to passive
voice):
Look. They haven't changed anything in this room.
I realized that they had misunderstood my idea.​

Answer 1

Look. They haven't changed anything in this room.

Look. Nothing has been changed in this room.

I realized that they had misunderstood my idea.

I realized that my idea had been misunderstood.