1. The dog was seen by the vet. 2. The singer was cheered by the crowd.
3. Positive reviews were received by the movie. Rewrite the passive voice sentences so they become active voice.

The big bang theory suggests that the universe is constantly expanding and that stars, galaxies and other entities are moving away from each other. if there were a galaxy moving closer to earth then that would contradict the big bang theory since the entities should be moving away from earth and from each other.