Text Music is an important way of expressing people’s feelings and emotions. The (26) , for instance, from 1960 to 1969 will be (27) by many people as a period of social and political unrest in America. (28) this time, many people despaired (29) the music favored by the American teenagers. (30) , we must now admit that the music they loved was (31) a sign of the period and a (32) of the tensions and changes that were (33) American society. In the early sixties, (34) about social justice and equality were (35) by the song "Blowing in the Wind" which (36) the civil rights song "We Shall Overcome". The conflict concerning military (37) in Vietnam was sung about in 1965 in the (38) song "Eve of Destruction" and in the song "Ballad of the Green Beret". A few years (39) , a gradual shift in mood became (40) in one of the most popular songs which suggested calmer questions and possible answers even as some pop stars protested loudly (41) the draft. Finally, music as a (42) of the political and social process in America was highlighted at Woodstock, New York, where half of a million young people came (43) in 1969 to spend three days listening to songs that spanned the decade. This event was a symbol of the desire for (44) within a time of unrest. Woodstock was a (45) of hope in days of rage.

A. During
B. After
C. For
D. At