He______have passed the exam, but he was too careless.

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问题 He______have passed the exam, but he was too careless.

选项 A、can
B、may
C、must
D、could

答案D

解析情态动词题。本题考查情态动词表推测的用法。can have done表示对过去行为的怀疑，用于疑问句，译成“可能做过……吗”；may have done表示对发生过的事情的推测，意思是“可能已经”或“也许已经”，用于肯定句中；must have done表示对过去事情的肯定推测，译成“一定做过某事”，该结构只用于肯定句；could have done意思是本来能够做某事而没有做。根据句意判断，D正确。

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专业英语四级

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He______have passed the exam, but he was too careless.

专业英语四级

Johnsaidthathispresentjobdoesnotprovidehimwithenough______forhisorganizingability.

The______ofaculturalphenomenonisusuallyalogicalconsequenceofsomephysicalaspectinthelifestyleofthepeople.

Mostimportantly,suchanexperiencehelps______aheightenedsensitivitytootherculturesandwillbringaboutagreaterappr

Whatarethetwospeakersgoingtodo?

Theperiodfrom1780totheCivilWarwasmarkedbyatremendousincreaseinthenumberofhigher-educationinstitutions,theri

Stressisawordcommonlyfoundintoday’svocabulary,andisoftenusedtodescribemodernworkingandlivingpatterns,especia

ThepollutionquestionaswellasseveralotherissuesisgoingtobediscussedwhentheCongressisin______againnextspring.

Threehourshaspassedsincethediscussionwasbegun,andI’mafraidtheywill______itstilllonger.

UnlikethecarefullyweighedandplannedcompositionsofDante,Goethe’swritingshavealwaysthesenseofimmediacyandenthusi

Whatsitcomdoesthemanlikebest?

患者，女，28岁。形体消瘦，性情急躁，近日胁痛口苦，纳呆泛恶，目黄溲赤，苔黄而腻，脉弦数。治法宜选用

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（2017年聊城）当前，我国学校的德育内容主要有()

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