we are very sorry that the airport will have to be closed for about 12 hours.that可省
that可省略么? 如果省略那后面就是一个主语从句?我不会分析这样的句子～!应该怎么分析?
that引导的宾语从句么?可省啊应该!如果要是we are very sorry the airport will have to be closed for about 12 hours.呢?还需要加什么所有格么?