-Why is you rprofessor so happy recently?-Because the throry she insisted on__________correct.A is proved B proving C was proved D has proved
The____of the Itaipu Dam took 30 000 people seven years.
Being a teacher,she dreamed____turning a deaf-blind creature into a useful human being.
Nancy was always speaking highly of her role in the play,____,of course,made the others unhappy.
Luckily,we’d brought a road map without____we would have lost our way.
It is suggested that a doctor ____immediately.