he collected data on the carbon dioxide content in the atmosphere over a 40-

he collected data on the carbon dioxide content in the atmosphere over a 40- He collected little things on his way.Then he put all the things in the bag Hardly ___________ the papers on his desk when the door burst open.A.he collected B.he had collected C.did he collect D.had he collected选出答案并请说明原因,那为什么要用过去完成时呢？ He has collected many kinds of them in his bedroom ,such as bears,penguins and so on. 英语翻译Data were collected using a self-administered mail questionnaire completed by residential real estate agents.Items for the questionnaire were based in some cases on survey items in the literature or were developedbased on the interviews w 这句话怎么办?其中which 可不可以用that 替代?Dr.Clark spent three years in the National Library during which time he collected most of the data he needed for his new book. code acting on data He collected shells two weeks ago.同意句It____two weeks ____he collected shells. They collected eggs (on the farm).(对划线部分提问) he has collected 4( boxes of / boxes) stamps选哪个? he has collected 1000 cool stamps in his 加年龄 With all the material she needed ____, she started to work on her thesis (论文).a、being collected b、having collected c、collecting d、collected单选 麻烦帮我分析一个英语句子成分...he lived in the forest for several month ,running the risk of being bitten by snakes,and collected a lot of first-hand data.中间那部分（running...snakes）在句子中做什么成分啊? data manipulation operation not legal on this DATA Data data data