12. Andrea (to practice) the piano every day for six months before she (to enter) the competition. 13. The children (to be) sad because they (to lose) their dog. 14. We (not to have) a problem getting a table at The Tropicanabecause we (already to book) one in advance. 15. Mary (to wash) the dishes when a glass (to break) and (to cut) her finger.