1. You (/to know) Ann for 3 years.
2.She look tired. What she /to do) all day?
3.How many times (Kate/to visit) Moscow?
4.I (to learn) English words for 2 hours, butI still I don't remember all of them.
5.The children (to watch) videos for two hours.
6.My sister (do\ homework) already.
7.Sorry, I'm late. (you/to wait) for long?
8.They ( not/to see) Ann recently.
9. We already (see) this film.
10.The students (to write) the essay all day, but they ( (not/to finish) yet.