working on a project是什么意思求相应的语法解释

working on a project是什么意思求相应的语法解释 tom is working on a new project now . 选择填空They are working( )a project.A at B on C for he is working on the math project this______week.A.all B.whole C.one D.next 英语翻译You are at B's house working on a homework project.(另外这里的 on ）劳驾! who are working on the project什么意思 I have all of my students working on a project...work 为什么要用ing形式?而不用原型? He was still working on his project while other people were having a rest 为什么是were having let's start working on the project,a shall we b will we c don't we d aren't the teather is(working on) his English project.为什么要填working on 理由是什么? Professor Li,along with his assistant,_____ on the project day and night to meet the deadline.A work B working C is working D was working这题选什么?为什么是这样 In order to meet the deadline .Professor Smith along with his assistants _____the project day andnight .A .wprk on B .works at C .is working on D .are working on on a project by project basis 何意? Have you been working on the project?__.I will have a rest in ten minutes.A:No,I haven't B:Yes,I do 选词填空 Mr Li,what are you doing these days?I am____a science project.A.talking about working on C.taking out project...on. 英语翻译I prefer working on projects by myself.I enjoy making something for a class project.这是一份调查问卷的其中的两个items 我有点弄不清project到底翻译成什么好 请问一道英语题2012.12.31.2121、37.Professor Smith,along with his assistants,______ on the project day and night to meet the deadline.A.workB.workingC.is working?D.are working?请问这道题怎么选,为什么