According to the new law, people found putting up “harmful” ads on the streets _______be punished.

Don’t use water to put out the fire if oil catches fire. As is known, oil ____ float on water.

--- What kind of house do you want to have? Something big?  --- Well, it         be big --- that’s not important. 

— Is there an express to Beijing tonight? — There ______ be, but you’d better call the booking office to make sure. 

---Did they have a good time at the party?---Judging by their smiles, they _________ have enjoyed themselves.