11. The traffic was very heavy. By the time I (get)..got........ to Mary's party everyone already (arrive) ... arrived....
12. I will graduate in June. I (see)...will see....... you in July. By the time I (see)...saw.... you, I (graduate) .had graduated
13. I (visit)..visited.....my uncle's home regularly when i (be)......was...... a child.
14. That book (be)..has been........on the table for weeks.You (not read)....have not you read....it yet?