Ответ:

1 She has just gone ..

2 leaved...

3 haven't solved the problem yet

4 When did it all happen?

5 the has changed...

6 you have made...

7 covered

8 has fallen

9 when did you open the window?, opened

10 hasn't risen ..

11 saw

12 haven't read ..

13 stopped

14 how many times have you been

15 translated

16 went, has spoiled

17 stopped

18 The lecture hasn't begun and the students are talking in the classroom yet