10. Lately I (think) about changing my career because I (become) dissatisfied with my job.
11. Bob (run) 10 km.
12. The dog (bark) since midnight.
13. We (miss) the bus twice this week.
14. The birds (already/fly) to the South.
15. Mike (forget) to learn his poem.
16. David (paint) in his studio since 10 o’clock.
17. Mary and Sam (collect) stamps for 3 years.
не знаю не знаю не знаю не знаю не