I believe he ______an accident, otherwise he would have arrived on time.

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问题 I believe he ______an accident, otherwise he would have arrived on time.

选项 A、would have had
B、could have had
C、should have had
D、must have had

答案D

解析 “主语+must +have+过去分词”结构，表示对过去事实的推测。例如：The road is wet. It must have rained last night. (路是湿的，昨晚肯定下雨了。)．I didn’t hear the phone. I must have been asleep. (我没有听见电话铃响，我肯定是睡着了。)

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成人本科学位英语

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I believe he ______an accident, otherwise he would have arrived on time.

成人本科学位英语

Televisionhaschangedthelifestyleofpeopleineveryindustrializedcountryintheworld.IntheUnitedStates,wheresociol

Inthelast500years,nothingaboutpeople—theirclothes,ideas,orlanguages—haschangedasmuchaswhattheyeat.Theorigina

Inthelast500years,nothingaboutpeople—theirclothes,ideas,orlanguages—haschangedasmuchaswhattheyeat.Theorigina

Shortlyaftertheaccident,two______policemencametothespot.

Hemusthavehadanaccident,orhe______then.

ThosewhowanttobeaneditorofEnglishWeeklymustbe______carefulness,patienceandmuchknowledgeofEnglish.

Thebuildingaroundthecornercaughtfirelastnight.Thepolicearenow______thematter.

Lookingbackonmychildhood,Iamconvincedthatnaturalistsarebornandnotmade.Althoughwewerebroughtupinthesameway

Therewasonethoughtthatairpollutionaffectedonlytheareaimmediatelyaroundlargecitieswithfactoriesandheavyautomob

世界上第一个标准化智力测量表是()。

某井油层厚度10m，其有效孔隙度为30％，套管外径为139．7mm(壁厚为7．72mm)，用浓度10％的盐酸酸化，其处理半径为1．5m，试求所需要的稀酸用量V稀及配置这些稀酸所需浓度为31％的工业盐酸的用量V浓(取小数点后两位)。

肾上腺糖皮质激素对血细胞的作用是

下列哪项是小儿急惊风的主要病机

当用人工挖土，基坑挖好后不能立即进行下道工序时，应预留( )一层土不挖，待下道工序开始再挖至设计标高。

下列关于成本动因的表述中，正确的有()。

下列各项中，行政机关的做法是法律允许的是()。

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