Dear larisa, 1. receive i … your letter about a month ago but i could not find time to write ever since. 2. be i … very busy lately, revising for my exams. 3. pass, work i … my first exam three days ago (it was english) and … non-stop revising for the second (latin this time! ) ever since. 4. sit right now it is 7 p. m. and i … at my desk. 5. sit i … here for six hours doing my studying. 6. do thank you for everything you … for me.
2. will be
3. passed, worked
4. will sit
5. was sitting
6. do