The office is cleaned two times a week.

The office isn't (is not) cleaned two times a week.

Is the office cleaned two times a week?

The office was cleaned on Friday.

The office wasn't (was not) cleaned on Friday.

Was the office cleaned on Friday?

The office is being cleaned at the moment.

The office isn't (is not) being cleaned at the moment.

Is the office being cleaned at the moment?

The office has already been cleaned.

The office hasn't (has not) been cleaned yet.

Has the office been cleaned?

The office will be cleaned next week.

The office won't (will not) be cleaned next week.

Will the office be cleaned next week?

The office can be cleaned.

The office cannot be cleaned.

Can the office be cleaned?

When we want to include the agent (who), we use the prepositional phrase with by:
The play An Ideal Husband was written by Oscar Wilde.

This problem will be discussed next week.

To make a passive form we use be + past participle.

This problem will be discussed next week.

My car is being repaired at the moment.

To make a passive form of a continuous tense we use be + being + past participle.

She has already been invited.

To make a passive form of the perfect tense we use have/has/had + been + past participle.