Голиценски четвертое издание упражнение 229 очень надо помогите

1. she has just gone out 2. she left 3. we have not yet solved … 4.when did it all happen… 5… . the wheather has changed… 6… . you have made 7. a large black cloud has covered … 8… . all my papers have fallen… 9. when did you open … — I opened … 10, the sun has not risen … 11. I saw 12. I have not read … 13… . trams have stopped … 14. i low many times have you been … 15… . i have translated … 16. we went … the rain spoilt … 17… . it has stopped 18. the lecture has not yet begun …