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题目内容
（东北林业大学-大学英语3）
9. (单选题) －Oh, thank you. I __________ how to do it.(本题2.0分)
A、 had wondered
B、 would wonder
C、 was wondering
D、 did wonder
A、 had wondered
B、 would wonder
C、 was wondering
D、 did wonder
参考答案
