—Is Bob still performing?—I"m afraid not.He is said ________ the stage already a
题型：不详难度：来源：
—Is Bob still performing?
—I"m afraid not.He is said ________ the stage already as he has become an official.| A．to have left | B．to leave | | C．to have been left | D．to be left |
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答案
| A |
解析
| 在“sb/sth is/was＋过去分词＋不定式”句型中，如果不定式所表示的动作在谓语动词前面发生，动词不定式要用完成式。 |
举一反三
The flu is believed ________ by viruses that like to reproduce in the cell inside the human nose and throat.| A．causing | B．being caused | | C．to be caused | D．to have caused |
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________ the meeting himself gave them a great deal of encouragement.| A．The president will attend | | B．The president to attend | | C．The president attended | | D．The president"s attending |
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—They are quiet，aren"t they?
—Yes.They are accustomed ________ at meals.| A．to talk | B．to not talk | | C．to talking | D．to not talking |
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The news of ________ greatly made us surprised a lot as he was indeed very excellent.| A．not his having elected | B．not his being elected | | C．his not being elected | D．his not having elected |
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________ the program，they have to stay there for another two weeks.| A．Not completing | B．Not completed | | C．Not having completed | D．Having not completed |
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