问题
选择题
________ from endless homework on weekends, the students now find their own activities, such
as taking a ride together to watch the sunrise.[ ]
A. Freed
B. Freeing
C. To free
D. Having freed
答案
答案：A
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解，世界进入了以美国和苏联为首的两极格局，冷战开始的标志是（ ）