computers are the second most useful ( ) of the worldA.inventions B.invention 遇到这类用序数词修饰名词的谓语怎么用啊

T__________ are computers for all the radios Computers are (wide) used in the world computers are ( ) used in the world (wide) The computers that run www.7000se.com are having some trouble.Usually this is just a temporary problem,so you might want to try again in a few minutes. Computers are ________(wide) used in the world.______(travel) also use computers. There are some computers in the office.(改为一般疑问句) 连词成句 three,there,computers,the,room ,in ,are there are two computers in the room.对（two)提问 are,there,computers,the,in,some,classroom造句 some computers are the size of big books保持句子意思不变SOME computers are(----) ( ------ ) ( -------)big books Mow,maps for all over the earth are on the computers.=Now,maps for __ the earth are __the computers 为什么是Computers are the second most useful invention of the world为什么是invention Policemen are investigating the _______ of computers from the company's offices.(thief)在线等 The computers are uesd ————（wide） all over the world. 根据音标填空 There are ____ computers in the room.The ___one is mine.[tu:] Is this the factory () computers are built?A.thatB.whichC.in thatD.in which There are many computers in the reading room.(写出同义句) There are many computers in the reading room.(改为肯定句）