问题描述：
You needn't worry about him,he seems__himself in there.
A.to enjoy B.to be enjoyed C,to be enjoying D,to have enjoyed,
那A可不可以?
求详解,谢蛤
A.to enjoy B.to be enjoyed C,to be enjoying D,to have enjoyed,
那A可不可以?
求详解,谢蛤
问题解答：
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