题目

下列佳句中，由杜甫创作的是（    ） A．“离离原上草，一岁一枯荣。”    B．“孤帆远影碧空尽，惟见长江天际流。” C．“朱门酒肉臭，路有冻死骨。”    D．“黄河落天走东海，万里写入胸怀间。” 答案：C _________ himself in carrying out an experiment, he can’t spare time to look after his children． [　　] A． Occupied B． Occupying C． Having occupied D． Having been occupied