If you don’t go to the meeting tomorrow, _______________.

People who have regular physical exercise seldom catch a disease like H1N1 Flu, ______?

As the intelligence of robots increases to match ________ of humans，we may use them to expand our frontiers.

．一________woman is Tom’s mother?一The one in the red coat．

Where does John live?—He lives on ______ floor but he doesn’t use a lift to go up and down.