His opening up _____ food processing factory is _____ comfort to his parents．A．不_刷题宝

题干

His opening up _____ food processing factory is _____ comfort to his parents．

A．不填；a	B．a；不填
C．a；a	D．the；不填

上一题下一题 0.4难度单项选择更新时间:2014-09-12 06:11:22

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