标志着日本从奴隶社会向封建社会过渡的事件是（）
A.庄园的出现
B.武士阶层的出现
C.大化改新
D.幕府统治的建立
参考答案：C
Many teenagers are made _____ what they're not interested in . [ ]
A. do
B. to do
C. did
D. doing
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