Mary went to the box office at lunch time, but all the tickets ____out.
_______ great picture! Who painted it?
When you ______ at a restaurant, please order just enough food.
Mr Lin, a famous writer, _______ our school last week.
Smile to the world, ______ the world will smile back to you.
— It will be my turn. I feel a little nervous. —______ You can make it.