A vacuum will neither conduct heat nor ...

A. transmit sound waves  B. transmitting sound waves  

C. sound waves are transmitted  D. the transmission of sound waves

Often a team of engineers is ...

A. work on one project  B. on one project work  C. working on one project  D. to work on one project

I was shocked ... the news of the crashed plane.

A. about  B. with  C. of  D. at