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题目内容
（河北工程技术学院大学英语1）
29、(单选、2.5分)
I did not notice that my dog was missing ________ a moment ago.
A、before
B、until
C、to
D、on
I did not notice that my dog was missing ________ a moment ago.
A、before
B、until
C、to
D、on
参考答案
