Choose the future perfect or the future perfect continuous.
1. By the time you arrive for lunch, we _____ our kids to bed.
2. By the time she takes her medical board exams in July, Angela _____ a total of 25 practice exams.
3. By the end of next week, Andrew ____ enough money to afford a new PC.
4. By the time she retires next month, James _____ 5 years as a receptionist in the hotel.