Fill in the gaps
We can make the passive by putting the verb "to be" into the particular tense we need and then adding the past participle.
If there is a regular verb, we can make the past participle by adding the ending "-ed" to the infinitive. For example, cook — cooked.
If there is an irregular verb, we need to use the past participle. So "buy" becomes "bought".
We also use the forms "being" and "been" (placing them between the auxiliary verbs "to be" or "to have" and the main verb) to form continuous and perfect forms respectively.
Present Simple
I do a task. — A task [ ][ ].
Present Continuous
I [ ] doing a task. — A task [ ][ ] done.
Present Perfect
I [ ] done a task. — A task [ ] been done.
Past Simple
I did a task. — A task [ ][ ].
Past Continuous
I was doing a task. — A task [ ][ ] done.
Past Perfect
I had done a task. — A task [ ][ ] done.
Future Simple
I [ ] do a task. — A task will [ ][ ].
Future Perfect
I will have done a task. — A task will have [ ] done.