There _____ lots of bad information which is not ____ for teenagers on the Internet.
The question is_________ that nobody can answer it.
The doctor did what he could_________ the dying man.
–Would you like some coffee or tea? –________. Water is OK.
The young man used to_______ to work, but he is used to________ to work now.
–Can you hear me? –No, I can’t. Would you please speak________?