Errors in English usage

After they had finished their meal, they asked the waiter the bill.

Those employees which were working on the upper floors of the building were unaware of the fire.

As you probably know they are very organized people and when there are a lot of people at the bus stop they stand in a line.

If you or a member of your family work for an airline, one of the great advantages is that you get a substantive reduction in the price of your air ticket.

If you go to a major airport in a capital city, you can often see very extinguished people setting out on their journeys.

They had not allowed for the high demand there would be for evening meals among the participants and so the dining hall was always overpopulated then.

Her office supervisor had a special attendance book and in it she painted a line at quarter past nine.

She told Mary that her lateness was now outside a joke and she had to try very hard to get up earlier.

This document must be regarded as containing an officiousregulation as it comes from a government department.

The roll of the teacher as I understand it, is to help their students to think for themselves.