Women _______ drink more than two cups of coffee a day have a greater chance of having heart disease than those ________ don’t.
—Who knows where Terry is? —The reason __________ Terry is absent is __________ his father had an accident.
__________ you have finished this programme, can you talk about our plan for holiday trip now?
I was about to leave __________ someone knocked at the door.
I __________ what he said and I __________ him.
—I wonder why Tom left without a word. —He __________ have had some trouble, for he looked dull.