Only when _______ home_____ that he had left his bag in the taxi he had taken.
We live in an age _______ more information is available with greater ease than ever before. (2012.浙江)
Being able to afford _______ drink would be _______ comfort in those tough times. (2012 .山东)
One's life has value _______ one brings value to the life of others. (2012 .江苏)
April Fools' Day is a day to play jokes on others, but no one knows when such a custom first ______.
I appreciated ______ the opportunity to study abroad two years ago.