23 arrived
24 has learned
25 have become
27 knew
28 were 
29 are looking 
30 had been
31 has- lived 
32 is- going 
33 have - known 
34 was
35 has already finished 
36 wasn't 
37 left 
38 would go
39 would -do
40 has just finished 
41 will go
42 was working 
43 were building