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ThE winDows must _________ BEForE you lEAvE thE...

D 此题重点考查四个短语的区别,turn up出现,开大;turn down 减小,关掉;turn on 打开; turn off关掉。句意:在你离开房间之前,请把灯关掉。结合语境可知选D。

sure 确定的

离开之前你必须锁好门。to是必须 离开之前你必须锁好门。to是必须 离开之前你必须锁好门。to是必须

leave 这里用原形是一般现在时态,表示将来。 before you leave 是时间状语表示将来。 祝学习进步,天天快乐!满意请采纳!有问题追问!谢谢!:)

C 四个选项分别表示拒绝、开、关上和翻起,根据题意选C,你离开教室前不要忘了关灯。

D 考查be to do结构。主语是the doors and windows,谓语要用复数,排除A,C;be to do sth.一定要做某事。句意:你离开实验室前,一定要把门窗关好,以免下雨。所以选D。

答案C make sure that...确信……;确保……后常接that从句。

Remember to close the door before you leave.—_________. A.Sorry,I won't B.Yes,I will C.I can if I wish D.It's hard for me to do that 选b

A 试题分析:turn off关掉,关闭;go off 离开,进行; put off推迟,阻止;set off出发,引起.句意:当你离开房间时,请关闭点灯.结合语境可知选A.点评:解答此类题型的要点是了解各个短语的基本含义及用法的不同,同时注意其表示多个含义的现象,...

C C。and everything为英语惯用表达,其意为“等等”“种种类似的情况”,如:She was very worried about her course and everything. 她还为她的课程等等发愁。He was very worried about his future course and everything. 他很担心他的前途及...

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