This old computer must have been of great use to ______did the scientific research.A those B when C whoever D whomever

This computer is much s____and faster than the old one. This computer is much s______ and faster than the old one This is a old computer .It works much slower.其中 It作什么语了 . This computer is much s___ and faster than the old one, This is （ ）old computer game.填什么?是a 还是 an This computer is 改为否定句（英语的）This is a computer game .(改为否定句） He is 13 years old .(对13years old提问） Is this your pencil (做出肯定回答) I have a old computer 改错 You this only old How much is this computer?---the --- --- this computer? 英文is this the computer Whose computer is this.[同义] This old computer must have been of great use to ______did the scientific research.A those B when C whoever D whomever IS THIS () A COMPUTER ENGINEER YES YOU CAN ASK HIM FOR ()A OLD FRIEND OF TOM'S ;ADVICE B OLD FRIEND OF TOM'S ;ADVICESC OLD FRIEND TOM; ADVICE D OLD FRIEND OF TOM;ADVICES 选哪个啊请说明原因那个C选项是old friend of Tom 六年级下册英语课文 第一课Xiaoling's New Apartment Welcome to my new apartment!Let me show you the changes between mt old bedroom and the new one This was my bedroom in my old house it was smaller than your new room Your bedroom here is mu This is a computer对computer怎么提问 This is a computer对 a computer提问 This is a old quilt.