题目内容
从所给的四个选项中选择最佳答案
On _____ this, she became excited.
[ ]
A.hear B.heard C.being heard D.hearing
答案:D
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题目内容
从所给的四个选项中选择最佳答案
On _____ this, she became excited.
[ ]
A.hear B.heard C.being heard D.hearing