当孩子们杳无音信时，救援人员担心发生了最坏的情况。

When there was no sign of the children, the rescuers ___feared ___the ___worst.

她的父母一直在争吵，她担心会发生最坏的事情。

Her parents had been quarrelling constantly, and she ___feared ___the ___worst.

听到来自坠机现场的初步报告后，我们都担心发生了最坏的事情。

After hearing the initial reports from the crash site, we all ___feared ___the ___worst.