Răspuns :
1=?,2=writed,3=thinked,4=preferes,5=is,studying,6=study,7=taked,8=writed,9=lives,10=worked
1- have you been waiting
2- they were writing
3- has thought
4- prefers
5- has she been studying
6- has studied
7- took
8- has been writing
9-lives
10- has been working