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题目内容
（延安大学-大学英语1）
－Oh, thank you. I __________ how to do it.(本题3.0分)
A、 had wondered
B、 would wonder
C、 was wondering
D、 did wonder
学生答案： C
A、 had wondered
B、 would wonder
C、 was wondering
D、 did wonder
学生答案： C
参考答案