A.He has always lived in America.
B.He has been in America for three years.
C.He visited America three years ago.
D.He has come to America to do research on advertising.
A.were more than he had expected
B.were well designed
C.were creative and necessary
D.were difficult to understand
A.read more advertisements
B.ignore advertisements
C.be clear of advertising techniques
D.be careful about those being advertised
A.Be more careful about what they advertise.
B.Spend less money on advertising.
C.Advertise more for their products.
D.Use new advertising techniques.