On foggy days, you have to drive very ________ on the expressway to avoid traffic accidents

The tourists from Australia _______have hurried to the airport-the flight was called off becauseof the heavy fog. [ ]

I like to live here because it’s very ___________ to get to a lot of places by bus.

Mike, it’s a pity you didn’t come to last night’s concert. Itwas really great! -Really? If I _____ so busy, I would have gone with you. [ ]

________ home.