問題詳情：TherewasawomaninDetroit，whohastwosons．Shewasworried___21___ them，especiallytheyoungerone，Ben，___22___ hewasnotdoingwellinschool．Boysin his class ___23___ funofhimbecauseheseemedso ___24___．Themother ___25___ thatshewould，herself，havetogethers...
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