It is reported that some mainland visitors to Hong Kong Disneyland didn't _______ the park rules and behaved improperly.
. –I hear Alice was badly injured in the accident and sent to hospital. --_____________, we should go and see her immediately.
She _______ have left school, for her bike is still there.
. –Would you mind if I used your computer for a while? -- ___________
. —What are you worrying about? —It is ________ there is any chance of being infected by AH1N1 virus.
. Dad’s coming. What present _________ for your birthday?