题目内容
I often hear the girl____ next door. When I passed the door, I heard her ____ just now.
A. sing; singing B. sings; sing C. sing; sings D. singing; sing
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题目内容
I often hear the girl____ next door. When I passed the door, I heard her ____ just now.
A. sing; singing B. sings; sing C. sing; sings D. singing; sing