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?