When and where to go for the on-salary holiday _____ yet.A．are not decidedB．have
题型：不详难度：来源：
When and where to go for the on-salary holiday _____ yet.| A．are not decided | B．have not been decided | | C．is not being decided | D．has not been decided |
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答案
| D |
解析
| 考查时态。句意：什么时候去哪儿过这个带薪的假期还没有决定。可知描述的是现在已完成的动作，主语When and where为抽象事物，不可数，故助动词用单数形式，选D。 |
举一反三
Is this the first time that you _____ here?| A．visit | B．are visiting | C．had visited | D．have visited |
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Travelers that they should bring their ID cards with them.| A．have reminded | B．are reminded | | C．were reminding | D．had been reminded |
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The water will be polluted unless some measures _____.| A．will be taken | B．are being taken | C．are taken | D．were taken |
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With the gas _____, they had to quit the car and walked.| A．has run out | B．running out | C．ran out | D．be run out |
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Many air flights _________because of the eruption of the volcano, in _______case, many passengers had no choice but to take a train. | A．had been cancelled; which | B．have been cancelled; what | | C．had been canceling; that | D．have been canceling; where |
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