阅读下面短文。从短文后所给的A、B、C三个选项中选出最佳选项。

    A man stopped at a gas station and bought a soft drink. He stood by his car to 1 and he watched a couple of men 2 along the roadside.

    One man would dig a hole two or three feet 3 and then move on. 4man came along behind to fill in the hole. While one was digging a new hole, the other was about 25 feet behind 5 in the old hole.

    The man with a soft drink was confused. "I can't stand this," said the man walking toward the men. "Stop it," he said to t e men. "Can you tell me what's 6 here?"

    "Well, we work for the county government," one of the men said.

    "But one of you is digging a hole and the other is filling 7up. You're not accomplishing anything. Aren't you 8 the county's money?"

    "You don't understand," one of the men said.

    "Normally (通常地) there are 9 of us: I Rodney and Mike. I dig the hole Rodney sticks in the tree and Mike here puts earth 10."

    "Yeah," said Mike. "Today Rodney is sick. But that doesn't mean we can't work, does it?"