她正在经历工作中的困难时期。

She's ___going ___through a difficult time with her job.

我母亲不得不在芬兰经历胆结石手术，当时她正在那里度假。

My mother had to ___go ___through gall-stone surgery in Finland, where she was spending her holiday.

他在考试期间经历了很多压力。

He ___went ___through a lot of stress during the exam period.