61.The diversity of tropical plants in the region represents a seemingly（ ）source of raw materials, of which only a few have been utilized.

29.She’s worn his designs on（ ）occasions from red carpets to movie premieres.

28.Last March the（ ）of a 19th century cargo ship was found by an underwater archaeological team.

27.The teachers’union（ ）a lawsuit against the district calling for repairing “deplorable” school conditions.

26.The school is going the（ ）mile to create the next generation of sporting stars thanks to its unique development program.

25.What actually（ ）a good angle —or a good selfie overall— is rooted in what we consider beautiful.

24The celebrity says in court papers she “has no anyone to proceed with a divorce.”of giving any authorization to

23.Prices have recently risen in order tothe increased cost of raw materials.

22.（ ）, the most controversial candidate in the election campaign, he has been strongly criticized for his crude comments about women.

21.When the police officers who took part in the King beating were first brought to（ ）,their lawyers used the videotape as evidence against the prosecution.

20.My mother was determined to help those in need and she would have been immensely proud of what has been achieved these last 20 years. The italicized part in the sentence expresses（ ）.