rewrite sentences 1-6 in the passive. in which sentences can we omit the agent? Why?

To rewrite sentences 1-6 in the passive voice, we will focus on changing the structure of the sentences, keeping in mind the use of the passive voice. Here are the revised sentences:

1. Active: They built this house in 1980. Passive: This house was built in 1980. (The agent can be omitted because the emphasis is on the action done to the house rather than who did it.)

2. Active: People use this road every day. Passive: This road is used every day. (The agent can be omitted as the focus is on the road being used.)

3. Active: Someone has cleaned this room recently. Passive: This room has been cleaned recently. (The agent can be omitted if it is not important or known who cleaned the room.)

4. Active: They are repairing my car at the moment. Passive: My car is being repaired at the moment. (The agent can be omitted when the focus is on the action being done to the car.)

5. Active: People speak English all over the world. Passive: English is spoken all over the world. (The agent can be omitted as the focus is on the language being spoken.)

6. Active: Somebody will finish the work by tomorrow. Passive: The work will be finished by tomorrow. (The agent can be omitted when the focus is on the completion of the work.)

In passive sentences, the agent can be omitted when it is unknown, irrelevant, or understood from the context. It allows the focus to be on the action or the object of the action rather than the doer.