To run around like a chicken with its head cut off （很忙，很紧张） 像无头苍蝇一样
I was trying to get too many things done at once and I was running around like a chicken with its head cut off!
我试图一次完成太多事情, 忙得像个无头苍蝇一样。

be in a tizzy 紧张；慌张；慌乱
She was in a real tizzy before the presentation.
她在演讲前慌乱得不行。
She got herself in a real tizzy because she couldn't find her mobile.
她找不到手机了，慌乱了好一阵。

in a total panic 惊恐；恐慌
I spilled coffee on my shirt before the job interview, so I ran around in a total panic looking for a new shirt.
面试前我打翻了咖啡，弄脏了衣服，所以我特别慌乱地到处找一件新的衣服换上。

tremble with sth （因紧张、激动、惊慌等）颤抖，哆嗦，抖动，战栗
My legs were trembling with fear.
我吓得腿发抖了。
His eyes were wide with fear.
他吓得眼珠子都快瞪出来了。