Convenient ___private cars are for us, they may also cause traffic accidents and pollution.

1. A.
   while
2. B.
   as
3. C.
   if
4. D.
   since

Convenient ___private cars are for us, they may also cause traffic accidents and pollution.

Convenient ___private cars are for us, they may also cause traffic accidents and pollution.

A. while              B. as               C. if                D. since

Convenient ___private cars are for us, they may also cause traffic accidents and pollution.

The convenient media give people the chance to have the information we look forward_____ to them quickly and cheaply.

A.to deliver               B. deliver                  C. to delivering        D. to delivered