Используйте present perfect continuous для выполнения предложений. it’s seven pm. i (wash) the dishes since six pm. we (work) since morning. dad (watch) tv. sarah (cook) dinner for two hours. the book is difficult to read. i (read) it for a month. they (sleep) for 10 hours! her eyes were red. it was clear she (cry). mr. thompson (wait) for 3 hours. i (do) my homework since seven o’clock. the teacher (examine) all the students for 4 hours. it (rain) for several days. liz (paint) in her room since morning. alec (stand) there since 6 o’clock. sam (study) french for 5 years.

It's 7 PM. I have been washing the dishes since 6 PM.
We have been working since morning.
Dad has been watching TV.
Sarah has been cooking dinner for 2 hours.
The book is difficult to read. I have been reading it for a month.
They have been sleeping for 10 hours.
Her eyes were red. It was clear she has been crying.
Mr . Thompson has been waiting for 3 hours.
I have been doing my homework since 7 o'clock.
The teacher has been examining all the students for 4 hours.
It has been raining for several days.
Liz has been painting in her room since morning.
Alex has been standing there since 6 o'clock.
Sam has been studying French for 5 years.