Mary made coffee ________ her guests were finishing their meal.
Three fourth of the homework _______ today .
______ good, these cookies sell well.
His parents were so poor that they couldn’t _______ to buy a computer for their only son .
Who did the teacher , as well as the monitor , _______ an article for the wall newspaper?
The question _______ we can get enough coal for the winter has not been cleared up yet .