—What do you think of teaching, Bob?—I find it fun and challenging. It is a job __________ you are doing something serious but interesting.
He lifted the receiver as soon as the telephone rang but ____ it on the table at once.
Don’t believe him.He always _______ promises,but never _______ .
We thought it was he who did it, but it _________ that he wasn’t even there.
The child ought to be punished, how should you let him _______telling lies.
—Could I use your pencil for a few moments, please? — ______ I'm not using it myself.