Mary has derived a good deal of benefit fr

A good advertising program tells potential customers the benefits derived from the use of products.（)

Foreign embassies provide nice programs and a great deal of information about their goods （)exporting.

The benefit of sitting less mentioned in the news is______.A．living longerB．keeping a good

Mary ____________her classmates has learned how to deal with the complicated problem.A

A good deal of research is being carried out nowadays______ the cause of juvenile crime. I

Mary has derived a good deal of benefit fr