Errors in English usage

Working all day long in financial services can be a very tired occupation.

The point of these events is to give colleagues a chance to recognize each other better.

This meat is very hard and I think you should ask the chef to cook it for a bit longer.

You really must be more careful when you do your exercises because you did six elementary mistakes in this one.

As the working party had several hours to wait for the next flight, some of the members decided to go on a short expedition to a local castle.

It would be a complete wastage of time if we tried to debate that issue again because last time we reached no conclusion.

I promise I won't forget the date of that meeting because I have made a note of it in my calendar.

I've asked again and again but nobody seems capable of explaining the reason of the accident that took place last week.

When the president appeared on the balcony a large crowd started singing 'Go home! Go home!' until the poor man had to leave.

This is a complete reversal of the terms as they were originally laid out in the last will and testament.