I      on my way here and had to ask the police for help.

Now the air in our city is ________ than it used to be．Something must be done to stop it．

  — Dad, it’s such a long way from our home to Tianyi Square!— You mean it’s _________to take a taxi ?

Nobody is perfect, bat everyone is different __ others.             

They won’t go to the zoo because the price is too ________.