My uncle looks after me. Change into passive voice--

Question: My uncle looks after me. Change into passive voice--

A) I was looked after by me uncle.

B) I am looked after by my uncle.

C) I am being looked after by my uncle.

D) I am looking after by my uncle.

Answer:
B) I am looked after by my uncle.

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Smoke fills the room. (Make it into passive voice)