单项选择题 We all buy things on the （）of the moment; this is what the retail trade calls an “impulse “buy.

单项选择题 If I could ensue a reasonably quick and comprehensive solution to the crisis in Iraq, t would not have entitled my speech “the（）problem.”

单项选择题 In fear for their lives and in （）of their freedom, thousands of enslaved women and children fled to the Northern States on the eve of the American Civil War.