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