--- Where is Jack? I can’t find him anywhere.--- He ______ his homework upstairs. A．might ha.
---WhereisJack?Ican’tfindhimanywhere.---He______hishomeworkupstairs.A．mighthavedoneB．...
--- Where is Jack? I can’t find him anywhere.--- He ______ his homework upstairs. A．might have done B．must have done C．might be doing D．must do
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| C |
| 本题考查情态动词表猜测的用法。结合语境Where is Jack?可知说话人想知道Jack现在在哪，谈论的是现在的事，排除AB; “在楼上做作业”应是正在进行，排除D。 |
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