On reaching home I discovered that I________my keys at the office.

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问题 On reaching home I discovered that I________my keys at the office.

选项 A、left
B、have left
C、was left
D、had left

答案D

解析本题考查时态的选择。根据“I discovered”可知，整句为过去时态。钥匙忘在办公室发生的时间早于发现的时间，故应该选择过去的过去，即过去完成时态，故选D。

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成人本科学位英语

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On reaching home I discovered that I________my keys at the office.

成人本科学位英语

Ifadinnerguestistobelatefordinner,heshould______.Thepassageindicatesthatagoodhostshouldtryhisbesttomak

SpeakerA:Goodtoseeyou.Youlookmorefitandbetter.SpeakerB:_________

Inthe(nineteenth)century,people(lived)inthenorthernareagrew(their)cropsonriver(bottomlands).

TheUSAiscomposedof50states,______areseparatedfromtheothersbylandorwater.

Yououghttoknowbetterthan______yourselfinunnecessaryexpense.

Onesummerdaymyfathersentmetobuywireforourfarm.At16,Iliked【76】betterthandrivingourtruck,【77】thistimeIwasn

W:I’mterriblysorryI’mlate.Ihadratheradifficulttimefindingyouroffice.M:_________

Whenheleftcollege,hegotajobasreporterinanewspaperoffice.

W:Youseemtohavealotofworkatyouroffice.You’vealwaysbeenstayinglateandworkingovertime.M:______

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HomeSchoolingAllchildrenintheUnitedStateshavetoreceiveaneducation,butthelawdoesnotsaytheyhavetobeeduc

Whenheleftcollege,hegotajobasreporterinanewspaperoffice.

根据损伤的性质关节损伤可分为：；；；；__。