Only then ______ how much damage had been caused.

Please ______ the traffic regulations.

Yuan Longping makes ____ possible to produce more crops in the same fields with this special strain of rice

----- Where did you ______ our chemistry teacher?

----- It was in the supermarket ______ I saw him.

As is known to all, oranges are _______ Vitamin C.

A. rich in        B. poor with        C. short of       D. good for

Lisa would rather_______ at home than_______ to the cinema .

It is difficult for us to ______  our conversation with all this noise around us.

Not only I but also Tom _____ fond of watching TV.  

Internet, as well as telephones, ____ an important part in daily communication. 

The Wangs are considering  ______  to Huangshan for a trip at five tomorrow morning.