There is no _________ that the Chinese people will present to the world a successful, splendid and unforgettable exposition（博览会）.

________do you exercise?-I exercise once a day.[ ]

What’s Jim doing now ?—He ________ TV with his father in the living room.

Who won _____ prize for the “Most Beautiful Nature” photography? — _____ 18-year-old girl.

Let’s go fishing if it this weekend. — But nobody knows if it .