--- He has to finish the experiment today. He must be in the lab,____?---That s
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--- He has to finish the experiment today. He must be in the lab,____?
---That s quite possible.| A．mustn"t he | B．won"t he | C．doesn"t he | D．isn"t he |
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答案
| D |
解析
| 该题考查反意疑问句中尾句部分的助动词用法，must be结构中的中心词应为be，且He must be in the lab相当于I think he is in the lab，故其尾句部分为isn"t he。 |
举一反三
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