—Hello, is Mary in
—I'm sorry she ______ come to the phone because she is having a bath.

A．would have been died
B．would have been killed
C．should die
D．would have killed

A．We are a walking, living, breathing record of our ancestors.
B．Many American slaves did not know who their ancestors were.
C．An adopted child generally lacks enough information to prove his identity.
D．Molecular genealogy can be used to prove a relationship between individuals.