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：He hasn’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

OvertheThanksgivingweekend,peopleboughtalotmorethanusualbecause_____

Thetravelershave(wait)______inthebusfor2hoursbecauseoftheheavyrai

Maryhadalwaysrefusedtocooperatewithothersbecauseshebelievedthatshec

Wecannotusethebridgenow,becauseit______.A、hasbeenrepairedB、isrepair

Whyaremoreandmorepeopleabletoworkathome?Becauseoftheincreasinguse

Theplanhavingbeenmade，whatisimportanttotheplan-makernowistoputiti

TheChristianpriestlivedintheRomanemperorsperiodwasimprisonedbecause_

TheChristianpriestlivedintheRomanemperorsperiodwasimprisonedbecause_

Youdon’tneedtodescribeher,becauseI______(meet)herseveraltimes.haveme

Theemployeesareanxious,notonlybecausetheymightfindthemselvesoutofa

Changesinthewaypeoplelivebringaboutchangesinthejobsthattheydo.

Mostpeoplewhotravellongdistancescomplainofjetlag.Jetlagmakesbusin

（）安全性好但交易成本最高。A.支付系统无安全措施模型 B.第三方经纪人支付

根据《工程造价咨询单位管理办法》的规定，乙级工程造价咨询单位的资质标准之一是：具

利息就是利息率，两者是同一概念的不同表达方式。（）

A

A.吗啡 B.阿扑吗啡 C.海洛因 D.纳洛酮 E.美沙酮对呕吐中枢有很

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