Coloca en las siguientes oraciones el verbo que se encuentra entre paréntesis en la forma correcta del Futuro Perfecto. Luego reescríbelas en interrogativo y negativo y tradúcelas al español:

She (buy) …………… an umbrella by the time it begins raining. By the time you arrive, I (spend) …………… all the money. The students (understand) …………… the exercises, before the weekend. Alice (buy) …………… a new car by the end of October. By the time she moves to Europe, my sister (have) …………… a baby. They (repair) …………… the car by the time you come back. She (do) …………… her homework by the end of the day. I (call) …………… the police before the thieves leave the bank. Before the train leaves my father (take) …………… us to the station. By 6 o’clock we (win) …………… the championship. Before the weekend, I (clean) …………… the house. By the next year you (forget) …………… your problems. Before this evening, your boss (call) …………… you several times. My brother (walk) …………… 5 miles by the time you meet him. Before John tells me the truth, I (know) …………… it. You (sing) …………… at the theatre by 8 o’clock. We (earn) …………… a lot of money by the end of September. Before he asks for the document, you (give) …………… it to him. I (think) …………… a solution by the time you go away. Before this afternoon, they (lend) …………… you the money.