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题目内容
（吉林师范大学大学英语2）
I didn.t know what to do but then an idea suddenly _____ me.(本题10.0分)
A、 happened to
B、 happened upon
C、 occurred to
D、 occurred upon
A、 happened to
B、 happened upon
C、 occurred to
D、 occurred upon
参考答案