To their disappointment, the couple _______ the house but couldn’t find the missing ring, which was to bring them into great trouble.
Fred, who had expected how it would go with his daughter, had a great worry ______ his mind.
The cost of living in Glasgow is among the lowest in Britain, ____ the quality of life is probably one of the highest.
—Why did you arrive late? —The fog _____ our air flight for about half an hour.
Jerry had worked hard for his chemistry examination so that he could be sure of passing it at his first_____ .
—Did you see ____ may be the longest total solar eclipse (日全食) in 500 years yesterday?— No, it was cloudy above my city at that time.