题目内容
（请给出正确答案）
[主观题]
He was so engaged ______ his business that he hadn't been home for a month.A．atB．onC．forD．
He was so engaged ______ his business that he hadn't been home for a month.
A．at
B．on
C．for
D．in
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A．股权式并购
B．现金购买式并购
C．混合证券式并购
D．杠杆收购
