问题描述：
was she here a moment ago?
was she here amoment ago?
she was there.
what are you singing?
I'm singing a song
what are you writing?
I'm writing a letter.
是否正确?
was she here amoment ago?
she was there.
what are you singing?
I'm singing a song
what are you writing?
I'm writing a letter.
是否正确?
问题解答：
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