when have they finished the work 时态哪里不对

when have they finished the work 时态哪里不对 the meeting began when they finished their work同义 they have finished a large part of the work and they have finished the work改写意思相近的句子 they will have finished work on the new stadium.on they will have finished work on the new stadium. They have already finished the work.如何改为否定句 Have you finished the work? 请问They will have finished work on the new stadium.句中的work on They must have finished the work,---?A,mustn't they B,haven' they must have finished the work by the end of last month,__ ( )the end of next month they will have finished the work.