7 The rubbish bins ..... (empty) every week.

Passive voice explanation:

• The passive voice is used to show what happens to the subject.
• It is formed with the verb 'to be' (in the correct tense) + the past participle of the main verb.
• 'Every week' indicates a habitual action in the present, so we use the present simple passive.

Answer:

7 The rubbish bins are emptied every week.