We think of ______ as an international practice not to interfere with other countries’ internal affairs. 单选题 According to new data from the census bureau, one out of every four adults in Houston ______ have a high school diploma. 单选题 Both air and water ______ what most creatures cannot live without. 单选题 I noticed there ______ a pen, two notebooks and a knife stained with blood. But they are gone! 单选题 ______ you are young, you will be blessed with beauty, hope, cheer, courage and power. 单选题