Advertising panies are always having to think up new ways to products.
A. design
B. classify
C. promote
D. identify
网友回答
A. design
B. classify
(答案→)C. promote
D. identify
解析：这句话的意思是:广告公司总是想尽办法来促销产品。design设计,计划,谋划,构思; classify分类,分等; promote 促进,发扬,提拔;identify识别,鉴别,把……和……看成一样。