_ is expected, according to the online survey,is _______ the price of housing will not go up any more

There is somebody knocking at the door.Who________ it be—I’m not sure. It ________ be a postman.

People around the world are becoming more and more________about the population explosion.[ ]

Animal signs or star signs don’t really influence your personality. It is you who ________ your life and your future.

Will future scientific discoveries ______ for us to live a much longer life?