1.   Staff appeared not to care about the unavailable theses, and it took considerable effort to persuade them to check the whereabouts of the missing ones.

2.   Has anyone checked the whereabouts of Tim Allen lately?

3.   Dozens of states in the United States have disclosed information on convicted sex offenders on the Internet so citizens can check their whereabouts.

4.   The Israeli army was going house to house in communities along the border, checking the whereabouts of every reserve soldier who lives there.

5.   The Israeli army was going house-to-house along the border checking the whereabouts of every reserve soldier.