Use the Present Perfect Continuous
1. The vegetables ______________________________ (boil) since 10 o’clock.
2. He ______________________________ (wait) for her answer for six months.
3. My sister __________________________(send) job applications for 3 months.
4. I __________________________(try) to find my documents since last Sunday.
5. They____________________________ (learn) Japanese for a couple of years.
6. My brother _________________________ (play) computer games for 3 hours.