Note to recorder:
Could you speak at a natural speed, please? And can you correct the sentences if there is mistakes or if you would say it differently? Thanks!
It was so difficult to get up last Monday for school. I had been working on my essays the night before and I was very tired
It had been raining and the ground was still wet
Do you think she’ll have seen the doctor by four o’clock?
By the time they come, I will have completed all preparations
We will not have finished cooking by the time the guests arrive
In September, she will have been living in France for a year
We will have been studying English for three years by the end of this course
In 30 minutes I will have been driving for 6 hours
All of your sentences were correct, but I edited it to convey a more natural speaking tone. Hopefully it helps and I didn't edit too much.