问题
                    
the air to hold some of the sun’s heat,the earth at night ________, too cold for us to live.
                            A:would be freezingcold
B:willbe freezing coldly
C:would be frozencold
D:can freeze coldly
                        
                        B:willbe freezing coldly
C:would be frozencold
D:can freeze coldly
正确答案是:
                        