для меня эти три часа были напряжен

для меня эти три часа были напряженными я все время пыталась понять и уже после двух часов я очень устала

Results (English) 1:

for me, those three hours were tense all the time I tried to understand and after two hours I'm very tired

Results (English) 2:

for me those three hours were tense all the time I tried to understand, and after two hours I was very tired

Results (English) 3:

For me these three hours have been tense all the time I have tried to understand and already after two hours i'm exhausted!