We should look up to _________ lend a hand to the people in trouble.

--How many students have passed the examination?    -- _______.

Understanding the cultural habits of another nation, especially ____________ containing as many different subcultures as the United States, is very difficult.

 In the next 30 years, we could see more heat waves like_____ now occurring in the US or the kind that swept across Europe in 2003 that caused tens of thousands of deaths.

— How many classmates did you see there?— ________.