题目内容：

Read the passage and fill in the blanks with proper words or the proper forms of the given words.

The first country to use public service advertisements (PSAs) is the US. During the Civil War, the government 1. (sell) bonds (债券) via newspaper advertisements provided without charge and placed throughout the North  2. (raise) money in support of the war. The way was so effective 3. it resulted in the first national ad campaigns for baking powder, soap and railroad travel, thus launching the commercial advertising industry.

The first non-governmental ads 4. could be considered PSAs appeared after the turn of the century. The National Child Labor Committee was chaired by Felix Adler, the early welfare leader 5.  stacked (堆积) his Board of Directors with newspaper publishers who would support his cause. Thus this was perhaps how the first example of media co-branding was born.

When the US 6. (draw) into World War I in 1917, the Federal Committee of Public Information was created  7. (encourage) public support and dramatize the reasons for “why we fight.” Within the Committee, a Division of Pictorial Publicity was formed by the artist Charles Dana Gibson, who recruited (招募) the leading artists of the time to create posters building support for the war. James Montgomery Flag created the “Uncle Sam Needs You” poster, 8. may be one of the most famous and iconic posters of all time. Hundreds of 9. posters which have become part of the national memory 10. (be) produced by this group. All work was produced free including the design, printing and placement.