Lisa got up very early________catch the first bus.
Is this ________ bike? No. ________ is over there.
—Hello, may I speak to Mr Green , please? —Sorry. He ________ a meeting. Can you call him later?
I can't find ________ beef in the fridge. Shall I buy some?
Mark Twain ______ school and began to work at the age of twelve.
Jack usually goes to school by bike, ________ today he walked to school.