________ away from school for two weeks, I have quite a few lessons to catch up
题型：不详难度：来源：
________ away from school for two weeks, I have quite a few lessons to catch up with.| A．Having been | B．To be | | C．Been | D．Being |
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答案
| A |
解析
| A 考察非谓语动词。分析句子结构可知，逗号前面是非谓语动词做原因状语，且与逻辑主语是主动关系，由此排除BC项，空格处的动作是在谓语动词之前就发生的，因此使用现在分词的完成式。故A正确。 |
举一反三
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________ the earth to be flat, many feared that Columbus would fall off the edge of the earth.| A．Having believed | B．Believing | | C．Believed | D．To believe |
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