68. When the boy playing by the river fell into the river, I was out of the room _______.
As he was about to go out to search for Mary, she happened ____.
I wonder how he _______ that to the teacher.
It is the third time that he ____ the first prize in the competition.
Are you sure _______ in a million years?
She couldn’ther wordsby the students even if she repeated them once again..