问题描述：
i saw him ___hurry at the moment.
a.ina b.in c.on d.on a
he put up a map ____the back wall because there was a hole ____it.
a.on;on b.at;in c.on;in d.on;at
a.ina b.in c.on d.on a
he put up a map ____the back wall because there was a hole ____it.
a.on;on b.at;in c.on;in d.on;at
问题解答：
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