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– Do you know the boy _______ is playing soccer there?

– Certainly．He is a friend of my ________．

A．who; brother’s                 B．who; brother

C．whom; brother’s                      D．whose; brother

—Do you know the boy ____ is playing soccer there?
—Certainly, he is a friend of my _____

—Do you know the boy ____ is playing soccer there?

—Certainly, he is a friend of my _____

A．who; brother’s

B．who; brother

C．whom; brother’s

D．whose; brother