2. 专升本
  3. He is an Aexperienced businessman: he has Bengaging in foreign Ctrade for a few Dyears.

He is an Aexperienced businessman: he has Bengaging in foreign Ctrade for a few Dyears.

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问题 He is an Aexperienced businessman: he has Bengaging in foreign Ctrade for a few Dyears.
选项 A、 
B、 
C、 
D、 
答案B
解析 engaging应改为been engaged。be engaged in意为“从事……”，又因后半句为完成时态，故用been engaged。
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