问题
                    
What time shall we leave for the airport— It’s foggy today. I’m not sure __________ be closed soon. Let’s go now.
                            A:whether the highway will
B:whether will the highway
C:when the highway will
D:when will the highway;
                        
                        B:whether will the highway
C:when the highway will
D:when will the highway;
正确答案是:
                        