一道非谓语动词的题The secretary worked late at night,( )a long speech

一道非谓语动词的题The secretary worked late at night,( )a long speech The secretary worked late into the night, ___a long speech f The secretary worked late into the night,___a long speech fo The secretary worked late into the night ___a long speech fo He worked late into the night,prepared a long speech. the secretary worked into the night,()a long speech for the 有关高中英语The secretary worked late into the night,( )a long spe The secretary worked late into the night ,（preparing） a long 18 The secretary worked late into the night, ___ a long . 问一题英文题The secretary worked late into the night,______a long The secretary wored late into the night,Preaning speech for The TreasetasY Worked Late Into The Night,Preparing A Long S