1.   A bullet-proof glass screen sealed the public gallery and everyone entering the building was subjected to a body search.

2.   As I entered the building I could see that it was damaged, probably by mortars, or shellfire.

3.   As we entered the building a white woman leaning from a balcony screamed a stream of abuse.

4.   Firemen entering the building were forced back by flames.

5.   In the unlikely event of a burglar entering the building, the alarm system will be activated.

6.   Members of the public cannot enter the building unless they have an identity card.

7.   Mr. Fong was able to enter the building unobserved.

8.   Outside, the rain which had been falling when they entered the building seemed to have eased.

9.   They have posted guards at every door to make sure no one enters the building.

10.   At exactly five minutes to nine, Ann left her car and entered the building.