1-i am almost sure he...his exam.варианты-will pass; pass; would pass; would have passed.
2-he said that he...by 7 o'clock.варианты-would be coming; would come; will come; would have come.
3-he knew that she... the next week.варианты-will retum; would be returning; would retum; would have returned.
4-he was almost sure he...the exam.варианты-would pass; will have been passing; would have passed; would be passing.
5-she said that she....english lessons twice a week.варианты-will have been taking; would have take; would be taking; would take.
6-tom said he.....to see us when he....in moscow.варианты-comes,would be; would come,was; will come,has been; came,is.