|
()9.The science and technology are developing rapidly, otherwise we ________ varieties of communication devices today. A．would not have B．do not have C．would have not D．would not have had 9．A。因为句中上文语境指现在事实，otherwise (否则)表示与现在事实相反的情况，所以用would do, 否定式would not do。 ()10.________ your letter，I would have set off two days ago. A．If I could have received B．If I received C．Should I receive D．Had I received 10．D。句意：如果我收到你的信，那两天前我就出发了。与过去事实不符，从句谓语动词用had＋done，如果had提前，if要省略。 ()11.If you ________ less money at that time, you ________ with so much trouble. A．wasted; would not meet B．had wasted; would not have met C．would waste; would not meet D．should waste; would not meet 11．B。由句中的时间状语at that time可知这是一个对过去事实进行假设的虚拟条件句。 ()12.If Mary ________ free tomorrow, she ________ go to the space science show with you.But she will write her essay. A．is; would B．were; would C．is; will D．were; can 12．B。由于条件句中状语tomorrow 的提示，可知这是一个对将来事实进行假设的句子。 | 
