填空题

Fred was playing the piano while Bill and I (sing) ______.

【参考答案】

were singing
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单项选择题
A．It’ s not far from the city center.B．It’ s worth visiting.C．She knows a lot about it.D．She has been there many times.
A．It’ s not far from the city center.
B．It’ s worth visiting.
C．She knows a lot about it.
D．She has been there many times.
填空题
Where did these trees grow a long time agoThese trees grew a long time ago in ______.
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