As the world’s population continues to grow,the ________ of food becomes more and more of a concern. (2013·浙江,4)
Next week, _______ you'll be in your house, is coming.
I often think of my home town, _______I lived a happy life.
I suppose you dislike her,_______ ?
Something will have to be done about the air pollution, _______ ?
Everyone's having a good time,_______?