题目内容：
10. When the Cultural Revolution was launched in China, his father ______ college.
(A) attended
(B) had been attending
(C) was attending
(D) has been attending
参考答案：
选择题：10.When the Cultural Revolution was launched in Ch
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When the Cultural Revolution was launched in China, his father ______ college.
(A) attended
(B) had been attending
(C) was attending
(D) has been attending