СОЧ ПО АНГЛИЙСКОМУ Grammar
Task 4.  Write the verbs  in Past Simple, Past Continuous or Present Perfect:
8. I (sit) on the school bus when I (see) my friend’s brother. 
9. Last  Friday evening at 8:00, I  (attend) at a ballet. 
10. You (laugh) and (dance) while my friend (sing) karaoke. 
11. They (go) to performance for all day. 
12. Tom  (not speak) the speech yet.