We ___have hurried all the way to the airport—the flight was called off because of the foggy weather. 

“Show me your permit, please.” “Oh, it’s not in my pocket. It ______.”

—How did your mathematics exam go？—I thought I           ，but in fact I fell behind in the class.

—I left my handbag on the train, but luckily someone gave it to a railway official.—How unbelievable to get it back！I mean, someone ________it.

_______  it be true that the road is being blocked at this moment, for cars are moving like snails inch by inch