Question

"Had he taken tea before the guests arrived?" Change in passive form

Answer 1

Had the tea been taken by him before the guest arrived?

Step-by-step explanation:

had + object + been + verb 3 + by + subject

Answer 2

had the tea been taken by him before the guest arrived ?

Step-by-step explanation:

- the object are being interacted => change it into subject

- add a AUXILIARY VERBS on it :))

- the subject interact => change it into by + with object (him, her, its)

- other things just keep it like normal