_____ if he had any difficulties, he made no answer. A．AskB．To ask C．AskedD．Aski
题型：不详难度：来源：
_____ if he had any difficulties, he made no answer. | A．Ask | B．To ask | C．Asked | D．Asking |
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答案
| C. |
解析
| 句子的主语是he，asked作时间状语，表示“当他被问到的时候”。 |
举一反三
Deeply _____, I thanked him again and again. | A．move | B．moved | C．moving | D．to move |
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Why do you have the water _____ all the time? | A．ran | B．to be running | C．running | D．being running |
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I can’t _____ you running up and down all day long. | A．permit | B．let | C．have | D．allow |
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The first textbooks _____ for teaching English as a foreign language came out in the 16th century. | A．being heard | B．to be written | C．being written | D．written |
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Asked if he could come to the party that night, _____. | A．nobody said anything | | B．they did not get an answer from him | | C．nothing was said by him | | D．John nodded his head and left the room |
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