—_______ do you usually go to school?— On foot. 

  Some robots are ______ to do the same things ______people.

  --- What do you think of the students of Meiling Middle School?---They study _____ harder than before.[]

The Kings have        been to Tibet. They have decided to go there next year.

---- __________is the train station from this shopping mall, do you know?---- About 30 minutes by bus.