【推荐2】According to a ballpark estimate, 5,000 dollars will be far from enough if you go to school in London. But my friend says that’s ________ the ballpark. (用适当的词填空)

【推荐3】It is critical that our nation and the world base important policies on the best judgments ________ (concern) the future consequences of present actions(所给词的适当形式填空).