Either you or one of your students___to attend the meeting__ tomorrow.
He failed the mid-term examination and only then _______ how much time he had wasted.
________confidence and the necessary equipment, they failed to rescue the 42 miners trapped in the coal mine.
A quarrel _________, which made him ______ his family.
Tom is always ready to help me ______I come to ask him for help.
The detective, _______to read a newspaper, glanced at the man _____ next to a woman.