连词成句。
（1）it / is / to / piano / difficult / the /play (?)
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（2）dinner/ I / have / 6:20 / at /pm (.)
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（3）practises / at / she / English / home (.)
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（4）the / clean /they / windows / Sundays / on(.)
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（5）film / does / a / see /she / on/ Monday (?)
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