A．We pay little attention to ad presentations.
B．We don't know the target customers well.
C．We exaggerate the effectiveness of products.
D．We make the ads boring and dull.

A．It must be simple enough to understand.
B．It should be creative and unique.
C．It should be shown in a inconspicuous way.
D．It is a chance to impress potential customers.

A．Fie learned a lot from his study in England.
B．He learned many foreign languages in his college.
C．He was satisfied with his education in general.
D．He didn't like the uniforms in elementary school.