11.   The extremists entered the building disguised as medical workers.

12.   Visitors are not allowed to enter the building without an escort.

13.   It is customary to hold the door open for someone who is entering a building behind you.

14.   We have a signed affidavit stating that the two men were seen entering the building.

15.   They entered the building surrounded by bodyguards.

16.   He received a court order barring him from entering the building.

17.   He is barred by court order from entering the building.

18.   If a person is given permission to enter a building at a particular time, then entry at another time may render him a trespasser.

19.   By the time she entered the building and hurried across to Occupational Health she was several minutes later than she liked to be in the mornings.

20.   Callers were told to enter the building up a back staircase, avoiding the downstairs shop, which had no connection with the parlour.