I rang you at about ten, but there was no reply— Oh, that was probably _____ I was seeing the doctor

—Why didn’t you come to my party? I was so disappointed at your absence.—I’m very sorry. I ________ but I had a visitor at the last minute.[ ]

What on earth are the police busy with— They have been investigating how the train crash __________.

下列各句中加横线词与“直夜溃围南出”用法相同的一项是（ ）。

Was it from Libya ______ wars suddenly broke out _____ we managed to rescue the Chinese working staff?