Нужно поставить слова в Past Perfect или Past Indefenit
11. Everybody noticed how sad she (be) the whole day. Something (go) wrong along the line. 12. After he was sacked by «Apple», he (loose) millions of dollars by selling his shares at the wrong time. 13. Jane MacDonald (start) working for the company when she was eighteen. 14. They sooner (send) a letter of credit to an exporter than the goods were loaded on to the ship.