Linda feels exhausted because she _____ so many visitors today.A、has been having

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问题 Linda feels exhausted because she _____ so many visitors today.

选项 A、has been having
B、had been having
C、was having
D、had had

答案 A

解析 have／has been doing的用法是指过去的动作或状态从过去某时开始，持续到现在，可能持续下去，也可能刚刚结束，多用于可延续性动作.本题主句用的是一般现在时，所以从句也应该与现在时有关。如：Hehash’t been having much luck since he came here．(自从来到这里他就不太走运。)故A项为正确答案。

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Linda feels exhausted because she _____ so many visitors today.A、has been having

Consumershavebecomelessinterestedin3DTVathome,partlybecauseof(have)

Todaytheelectroniccomputerisusedinsolvingmathematicalproblemshavingto

Whatisthemainideaofthepassage?[br]Theenergyissavedbecause______.A、

Whydidtheelephantsitonthecar?Becausetheelephanttookittobehis_____

(send)______thebabytobed,themotherbegantoworkagain.Havingsent

Nothavingbeendiscovered，manylawsofnatureactuallyexistinnatureandwait

Humanbeingsareafraidofratsmainlybecause______.[br]Withgoodleaders,_

Childrenusuallyenjoyplayinginthe(amuse)______parkbecausetherearemany

Intheearlydaystherewerenonamesforthedays,becausemen______.[br]Our

Intheearlydaystherewerenonamesforthedays,becausemen______.[br]Who

WhydidMr.Greenhaveaterriblefuelbilllastwinter?[originaltext]Mr.Green

Wehavelongceasedtoliveinaworldwhereeducationwastheprerogative

Thesocialcostsofunemploymentgofarbeyondthewelfareandunemploymentp

Nexttimeyougazeoutside【C1】______acoldwinterdayandthinkhowdeade

A. B. C. D.

（）不是对Web服务器进行性能评估的主要指标。A.丢包率 B.最大并发连

有效期若标注到月应当A.印刷在药品标签的边角B.为起算月份对应年月的前1个月C.

为防止诱发疾病，系统性红斑狼疮病人应避免的是A.寒冷 B.精神刺激 C.过度

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