We can go to school ________ bike to make our city greener.
by
on
in
What’s your favorite ____ ?—Beijing. A. subject B. book C. city
—We need ____ books about Beijing Opera.—Sorry, we don’t have ____.now. A. some, some B. any, some C. some, any
We usually get up_____ six o’ clock ____.the morning. A. at, on B. at, in C. on, in
________ the help of the dog, people lost in snow found their way home.
It’s ________pleasure for me to be invited to play the piano at the concert.