单选题
People appreciate ______ with him because he has a good sense of humor.
A、
to work
B、
to have worked
C、
working
D、
having worked
【正确答案】
C
【答案解析】
[解析] appreciate的非谓语动词用法。A、B项排除。C、D项的区别在于时态，根据句意，动名词动作与句了谓语动作并无时间上的先后，必须用动名词一般时态。
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