Future continuous vs future perfect

Ben…………………………(write) his essay by Friday.

This time tomorrow I…………………….(watch) my favourite TV show.

By the time the medical students graduate, they………………..(study) at university for 6 years.

I’m afraid I…………………… (not/finish)  cooking  by the time the guests arrive.

- ……………………………..(you/go) to the post office later?  - Yes, do you want me to get anything for?

This time tomorrow I…………………….(sit) my English exam.

I………………………………….(wait) for you in the café, so there’s no need to hurry.

He……………………………….(do) all his tasks by the end of the week.

I can’t come with Mary. I ………………………………(babysit) for my little brother.

……………………………(you/eat)the meal by the time he arrives?