---Do you know_______ it is from our school to Yangzhou? ---I am not sure. I guess it's about 40 minutes by bus.
Beijing is one of the ______ in the world today.
Eating some vegetables is good ______ your health.
Jim’s parents enjoy _____ in the countryside.
My shoes are cheaper than _____.
_____ he was tired, _____ he didn’t stop to have a rest.