It was a time ________ volunteers from all over the world visited this nursing home regularly.

There________ some paper and four knives on the table.

These beautiful photos _______ on the Great Wall last week.

The problem is ________ sometimes when we are given something on a constant basis, we start to take them for granted and forget being thankful for what we already have

e got a general idea of how our new flat will bedecorated, but nothing ______ at the moment