Change the sentence to passive voice in past perfect continuous ...

★ Passive Modals in Different Tenses

Change the sentence to passive voice in past perfect continuous tense: They had been waiting for a long time.

A. They had been waiting for a long time.

B. They had been being waited for a long time.

C. A long time had been being waited by them.

D. A long time had been waited by them.

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Transform the sentence into passive voice in past continuous tense: We were cleaning the house.

A. The house was being cleaning by us.

B. The house was cleaning by us.

C. The house was being cleaned by us.

D. The house was cleaned by us.