Мне нужно написать 3 речення в 3 значениях ну вот - + ? это в present Perfect и также только в Present Continous и Present Simple

Present Simple 1)They work at the office.+ They don't work at the office.- Do they work at the office? 2)My uncle often meets his wife at her office.+ My uncle doesn't often meet his wife at her office.- Does my uncle often meet his wife at her office? 3)They usually buy interesting books in London.+ They don't usually buy interesting books in London.- Do they usualy buy interesting books in London? Present Coontinuous 1)He is reading a book at home now.+ He isn't reading a book at home now.- Is he reading a book at home now? 2)Ann is sitting at the table.+ Ann isn't sitting at the table.- Is Ann sitting at the table? 3)He is doing work for this lawer.+ He isn't doing work for this lawer.- Is he doing work for this lawer? Present perfect 1)He has already finished your homework.+ He hasn't finished your homework yet.- Has he finished your homework yet? 2)They have already chacked a file.+ They haven' already checked a file yet._ Have they checked a file yet? 3)I've finished my work already.+ I Haven't finished my work yet.- Have you finished yor work yet?