Computers must be of great use to ________ doing the scientific research.　A．those　　　　　　　 B．who 　C．those who 　　　　　D．whomever为什么呢?

computers must be of great use to doing scientific research Computer must be of great use to ____do the scientific research.Computers must be of great use to ____do the scientific research.Computers must be of great use to ____doing scientific research.分别填什么?为什么? Computers must be of great use to ________ doing the scientific research.　A．those　　　　　　　 B．who 　C．those who 　　　　　D．whomever为什么呢? All the computers must be ____ down before you leave.All the computers must be ____ down before you leave.A shutB closedC takenD turned you must be out of the guy who invented computers must have made of a (f ) by now怎么填啊 I must be stupid,must be crazy,must be out of my mind 是哪首歌里的 I must be stupid,must be crazy,must be out of my mind什么意思 computers 这个单词，选5个字母排列。words are formed using the letters of the wordcomputers.how many different 5letter words are possible if:1）没有限制排（there are no restrictions）2)有两个元音字母（2 vowels must be use We must be well-being of each withdrawal receivable must be multiple of 100. withdrawal receivable must be multiple of 100. 英语翻译Computers will be __ __ lots of people in the future we must be aware of the importance of learning English 三校生英语选择题-被动语态1、computers()widely in chinaA.use B.be used C.has been used D.are being used2、much attention must()to the development of science and technology.A.pay B.to pay C.be paid D.have paid3、this medicine()before din 请问这怎么翻译的,thanks怎么选择Had electronic computers not been invented, many problems of space flight ______ now. A. could not have been solved B. could not be solved C. must not be solved D. should not have been solved the history of computers 作文 must be