题目内容
----I called him twicw and I couldn’t get through to him.
----The line might have been out of order,_____?
| A．mightn’t it | B．hadn’t it | C．wasn’t it | D．haven’t it |
C
解析试题分析：考查反意问句：句意：--我给他打了两次电话都打不通。--线路有可能出了问题，是吗？might have done表示对过去情况的推测。表推测的情态动词的反意疑问句看有没有过去时间，因为第一句话中是过去时，所以反意问句也是过去时。故选C。
考点：考查反意问句
________ the problem of land erosion(侵蚀) getting more serious, the government is searching for a way to deal with it.
| A．As | B．When | C．With | D．If |
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| A．when | B．that | C．before | D．since |
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| A．walked | B．he is walking | C．walking | D．is walking |
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—No problem.
| A．when | B．whether | C．that | D．what |
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| A．if any | B．if ever | C．if so | D．if anything |
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| A．that | B．which | C．what | D．whether |
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| A．which we think it is | B．which we think are of |
| C．of which we think are | D．I think which is of |