1.   There were cargo bays and airlocks situated at random among the folds and spirals, but all of them remained closed.

2.   Most shops have remained closed for the past three days.

3.   The road will remain closed until the water subsides.

4.   A night curfew was in force in cities, all demonstrations were banned and the universities remained closed.

5.   His mouth remained closed in favour of the second mouth conveniently nearer the lungs.

6.   The church door remained closed.

7.   The wharf walk had remained closed to the public in case the lab boys wanted a second bite at the cherry.