Fan Bingbing is easy to recognize as she’s the only one of the women who________ the    bright evening dress tonight.

Quantities of water ________for cooling in the only one of the factories that ________steel.

—Is there anything wrong, Bob? You look sad. —Oh, nothing much. In fact, I _____ of my friends back home.

Although the causes of cancer ________, we do not yet have any practical way to prevent it．

 “Do you know that Jack ______ a postman for about six years?” “Yes, I see.”