In his lecture, the professor referred to the belief, in contrast to all other countries, _____ the elderly are wise, _____ is particularly dominant(占优势的) in the Chinese culture.
--Can a plane fly ________ the Atlantic Ocean? --Yes, but it needs to go________ the clouds for hours.
The room ___________ window is open is mine.
Don’t turn on the radio __________ your mother allows you.
He devotes ________to ________.
Only when it is hungry ______ a human being.