Условие задания:

4 Б.
Choose the future perfect or the future perfect continuous.
1.  By the time dad gets to the airport, we ______ for over three hours!
2.  This time next month, I _____ here for an entire year.
3.  By the end of next week, Andrew ____ enough money to afford a new PC.
4.  By the time our visitors from England come next week, we _____ construction on our new house.