—There is a lot of smoke coming out of the teaching-building there.—Really?It _________ be a fire,most probably.
--Is that Wenfeng Road over there? --It ________ be, I’m not sure.
If you like art and enjoy looking at the pictures, ________ is an interest.
___many times, the determined man didn’t give up and was finally offered a position in the firm.
In case of fire, stay low to the ground in a smoky room, ________ smoke always rises towards the ceiling.
Everything on the news ________ a whole new meaning when you have a personal connection with the people.