One million people of the city, ______ thought little of the event, were asleep as usual that night.
_____ two English exams to worry about, I have to work really hard this month.
_______ to the discovery of radium, Madame Curie plays an important role in modernscience.
The couple _________ last week, which surprised their friends and relatives greatly because they appeared that happy all the time.
---Tom hurt his left leg in the game this morning.---Really? It would take at least two weeks ______ he could recover and return to school.
His father insisted on punishing him, but he insisted he had _______ to do with the matter.