听到孩子走失的消息，这位母亲变得极度焦虑不安。

The mother became ___distraught upon hearing her child was missing.

听到这个噩耗，她心烦意乱地坐在那里，一句话也说不出来。

Upon hearing the tragic news, she sat there ___distraught, unable to utter a word.