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单选题
21. What happened to the author's son in the middle of his junior year? ( )
A
He was kicked out of school for having to go to jail.
B
He broke the parking rules and had conflict with police.
C
He was taken out of school by his parents and went home.
D
He couldn't afford to pay tuition and continue his education.
答案解析
正确答案：C
