—Can I help you, boy?—Yes. There is ______ wrong with my bike. 

_____ of the family isn’t willing to give up the chance to watch the exciting match. 

．No one knows exactly when our ancestors started talking，but new evidence suggests  _______might have happened a long time ago．

—What do you think of the price of these computers?—They are at least equal in price to, if not cheaper than, ________ in other companies.

—Is there any possibility              you could pick me up at the airport ?—No problem