51． A．when B．because C．even if D．though
50． A．will save B．would save C．save D．would have saved
49． A．sound B．voice C．noise D．tone
48． A．38 B．the 38 C．38th D．the 38th
47． A．live B．living C．alive D．lively
46． A．for himself B．of himself C．by himself D．to himself
45． A．one word B．one sound C．one row D．one line
44． A．Come out B．Come again C．Come on D．Come off
43． A．to say B．said C．and saying D．saying
42． A．digging B．digging through C．digging out D．digging into