the plane was late and detectives were waiting at the airport all moring这句话为什么用过去进行时

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• the plane was late and detectives were waiting at the airport all moring这句话为什么用过去进行时
• 【送分题】the plane was late and detectives were waiting at the airport all morning.l有两个现在进行时的特例把我搞糊涂了1、新概念2第七课的the plane was late and detectives （were waiting ）at the airport all morning这句为什么用过去进行时呢?“等了整整一个上午”又不是正在等一个上午,所以应该用过去完成时啊?“已经等了整整一个上午”这样说着才顺嘛2、she is always
• The plane was late and detectives were waiting at the airport all morning.waiting 后为什么没加for呢?wait for不是一个固定搭配吗?一句话中是不能两个介词连用吗?希望大家能帮我解决这个问题,谢谢!
• the plane was late and detectives were waiting at the airport all moring这句话为什么用过去进行时
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