不开挖修复管道:英语选择

来源：百度文库 编辑：杭州交通信息网 时间：2024/05/05 17:59:15
The man we followed suddenly stopped and looked as if ___ whether he was going in the right direction.
A. to see B. seeing

选什么？为什么？
the key is A,but why?

B
补充完整是The man we followed suddenly stopped and looked as if (he was)seeing whether he was going in the right direction
主语一致是可省略从句中的主语+谓语

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