--- Another cup of coffee? ---No. thanks. I _____ be off. Marry is waiting for me.

Facts prove that the world’s economic development is not a win-lose game but one in which all ______ be   winners. 

Some frightening pets _________ be kept home so that they won’t hurt others.

His shoes are muddy. He        be working in an office all day.

China’s word，tuhao，which caught the attention of the dictionary’s editing team，__________ be in next year’s Oxford English Dictionary．