How wonderful to go away for a month, _____ all worries and responsibilities! [ ]

The girl looked at me with a____expression. Maybe the problem was quite ___.

How _______ the song she sings sounds! I have never_______ a better voice.

(2013·江苏南通市二模)We ________ have hurried all the way to the airport — the flight was called off because of the foggy weather.

It remains________ whether Jim will be fit enough to play in the finals