How does the Internet ____us? —By sharing information free of charge．

Jack, please do not _______ yourself in that matter, or you will be in great trouble.

Susan, I have a sore throat.—You talked ______ just now. Please drink more water.

If you try to understand _____ that prevents so many Americans from being as happy as one might expect, it seems that there are two causes. [ ]

Is that Jack speaking—No. He isn’t in right now. He to the cinema.