Each of the students, working hard at his or her lessons, _______ that all of them can do well in the coming examination.
Whenever I met him, ____ was fairly often, I like his sweet and hopeful smile.
It was not until dark _____he found _____he thought was the correct way to solve the problem.
Since Claire had become attached to Tony, the robot needed _______________.
My father walksdog after supper every day. A a; the B /; / C the; the D the; /
–How are you feeling about the story of a young lady’s being taken away by a UFO last week? --We are very frightened—I ____bad dreams for weeks.