问题描述：
he was so tired___a day's work that he left all the food___for him ___
a.of,prepaned,touched
b.with,preparing,untouched
c.with,prepaned,untouched
d.by,prepaned,untouching
a.of,prepaned,touched
b.with,preparing,untouched
c.with,prepaned,untouched
d.by,prepaned,untouching
问题解答：
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