为什么选这个1.It ____for 5 days and no one knows when it will sto

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为什么选这个
1.It ____for 5 days and no one knows when it will stop.
A.has rained B.is raining C.has been raining D.was raining
为什么选【C】而不选【B】
2.I was told that he ___a speaking note yesterday but I don't know whether he has finished it.
A.was writing B.wrote C.had written D.has written
3.The college graduate insisted that he_____to Tibet for the Western Development.
A.be sent B.was sent C.would be sent D.will be sent
4.The vegetables are cheap;however,the chef has prepared a nice meal with them.

1 .has been raining 是现在完成进行时,表示这个动作从过去开始一直干到现在且还可能持续下去.据语境这里的雨尚未停,所以选这个更合适.
2 A 过去进行时,因为不晓得是否他写完,只能说看到他昨天正写.过去进行时只表过去时正在干,与是否完成没有关系.
3 选A,这是虚拟.insist后如果表示的是一个事实就不用虚拟,该用什么时态用什么,但如果表示的是一个建议,是未干的事,就要用should+动词原型的虚拟,should可以省略.这里说的是大学毕业生,应该他坚持他应当被派往西藏------
4 蔬菜并不贵,然而厨师却用这些做了一顿丰盛的饭.

为什么选这个1.It ____for 5 days and no one knows when it will sto The meeting _______ for five hours.No one knows when it will No one knows about it,反义疑问句英语翻译No one knows who invented the pencils or when it happene 1: No one knows how long it will last. 2: were curious to fi What will our life be like in 2060?No one knows,_78_____ ,it No one knows how long it will last.They don't know how long 改错：No one knows how much time it will take Chinese women ast No one knows when he will be back NO one knows when we will start tomorrow. No body knows if it rains 还是 No body knows if it will rain When will you(return it to)me?In two days.为什么不用give it back或

为什么 选这个1.It ____for 5 days and no one knows when it will sto

为什么选这个1.It ____for 5 days and no one knows when it will sto