completed all assigned work to schedule.这句话中.to schedule什么意思?或者翻译一下

all tasks have been completed Constratulate you have completed all hardcore worlds! completed Shut down the computer after all work has been completed Congratulations you have completed all hardcore worlds!是病句吗 assign是什么意思 assign是什么意思 all the preparations for the task___,and we are ready to startA.completed B.complete C.had been completed D.have been completed All the preparations for the task _____,and we're ready to start.A.completed B.complete C.had been completed D.have been completed All the preparations for the task ________ and we’re ready.to start.A.completed B.complete C.had been completed D.have been completed 为什么用have been completed而不用are completed?All the preparations for the discussion have been completed and we are ready to start. All the preparations for the project ______,we’re ready to start.AAll the preparations for the project ______,we’re ready to start.AA.completed B.have been completedC.had been completed D.been completed能不能 having been completed? The mayor of Beijing says that all construction work for the Beijing Olympics ____ by 2006.A.has been completed B.has completed C.will have been completed D.will have completed The mayor of Beijing says that all construction work for the Beijing Olympics ______ by 2007.选项:a、has been completed b、 has completed c、 will have been completed d、 will have completed The mayor of Beijing says that all construction work fot the Beijing Olympics ____by 2007.A has been completed B has completed C will have been completed D will have completed all the preparations for the task__im ready to start(to complete)为什么不填completed? shut down the computer after all work has been completed是什么意思? completed all assigned work to schedule.这句话中.to schedule什么意思?或者翻译一下