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