You did us a great favour by ____ that problem.
选择一项：
a.
dispose of
b.
disposing of
c.
dispose to
d.
disposing to
出自：国家开放大学-开放英语4
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You did us a great favour by ____ that problem.
选择一项：
a.
dispose of
b.
disposing of
c.
dispose to
d.
disposing to
出自：国家开放大学-开放英语4