America will never again have as a nation the spirit of adventure as it ______ before the West was settled.
After searching for several hours, the boy was _____ too pleased to find his lost mobile phone.
. –What’s the temperature today? --It’s 5 ℃ below _____. It is _____ cold.
. –Hi, Bob, don’t you know me? --Oh, it’s you. I _____you.
. Many Chinese people eat _____ vegetables per person today as they did in 1969.
After making a big decision without his parents’ permission, he went abroad to Brazil _____ his brighter career.