–What’s the time?--It’s_____.
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.