Choose the future perfect or the future perfect continuous.
1. At the end of June, Jane ______ enough credits to earn her Doctor's degree.
2. By the time she takes her medical board exams in July, Angela _____ a total of 25 practice exams.
3. Next month, Anthony _____ Spanish at this school for 30 years.
4. By the time her parents return, she_____________English for 3 weeks.