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--Do you know          the man with a pair of sunglasses is?
--An actor, I think.

— Do you know the man       sunglasses?— Yes. He’s Tony’s dad. 

--Do you know          the man with a pair of sunglasses is?

--An actor, I think.

A．who             B．how              C．what             D．whom

--Do you know 　　　　 the man with a pair of sunglasses is?

--An actor, I think.

A. who　　 B. how　　　　 C. what　　　　 D. whom