英语听力论坛：09年12月四级完型填空参考答案
67-71.B focuses
D adequate
A currently
C challenges
B retirement
72- 76.
A over
B learning
D on
C needs
D portion
77-81
A when
C homes
B ever
A for example
C adjust
82-86.
D to
B unpredictably
C available
A sense
D roles
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