Ejercicios de inglés: El futuro perfecto

1. We will been  on holiday for 10 days by this time tomorrow. We will have been there for 10 days by this time tomorrow.
Habremos estado de vacaciones durante 10 días a estas horas mañana.

2. The house will have be sold by next week. The house will have been sold by next week. 
La casa habrá estado vendida la semana que viene.

3. She won’t has completed her exams by the weekend. She won’t have completed her exams by the weekend.
No habrá terminado sus exámenes este fin de semana.

4. Will you have finished cooking dinner by 7 o’clock?
¿Habrás terminado de hacer la cena a las 7?