Although ______ for many years, the two old sisters recognized each other at onc
题型：不详难度：来源：
Although ______ for many years, the two old sisters recognized each other at once.| A．having been separated | B．being separated | | C．having separated | D．had been separated |
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答案
| A |
解析
| A考查非谓语动词用法。前后主语一致并且前边动作发生在后面的动作之前，故用现在分词的现在完成时。 |
举一反三
He lay in bed, with his eyes ______ up at the ceiling and his fingers ______.| A．looked; crossing | B．looking; crossing | C．looking; crossed | D．looked; crossed |
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—______?
—Yeah, it seemed a little confusing to me at first, but now I get it.| A．Can you give me a moment | B．See what I mean | | C．Are you stuck | D．Can you go on |
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There were signs here and there, _____ visitors to look out for ______ rocks.| A．warning; fallen | B．warned; falling | C．to warn; fallen | D．warning; falling |
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| John plays basketball well, ___his favorite sport is badminton. |
— Did you know any Chinese, Joyce, before you arrived in Beijing?
— In fact, never _______ it.| A．have I learned | B．I have learned | C．had I learned | D．I had learned |
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