Какое это время 1. i have been working on this problem for three months already. 2.i worked on this problem threemonths ago. 3. i was working on this problem from 3 to 5 yesterday. 4.he always works well. 5.he will work on this problem tomorrow. 6.he will be working on this problem at 3 o'clock tomorrow. 7.they will have finished working on this problem by 3 o'clock tomorrow. 8.he will have translated the half of the article by 3 o'clock next week.